Platforms

Platforms are a wider ecosystem or environment, frequently (but not always) built around a virtual machine or language.

Native refers to a variety of different hardware/OS combinations, including:

Windows/x86-x64
macOS/x64
macOS/ARM (Apple Silicon)
Linux/x64
iOS/ARM
Android/ARM
Android/x86

Internal Developer Platform

Company	Description	Alternative to
CloudQuery	Assess, audit, and evaluate the configurations of your cloud assets.	AWS Config, GCP Cloud Asset Inventory, AWS GuardDuty
CrowdSec	Collaborative IPS able to analyze visitor behavior and to provide an adapted response to all kinds of attacks.	GreyNoise
Firezone	VPN Server & Firewall for teams	OpenVPN Access Server
Gravitl	WireGuard virtual networking platform (VPN)	Tailscale, OpenVPN
Nuclei	Vulnerability scanner based on simple YAML based DSL	Tenable Nessus

Name	Description	Framework
C#: Grandnode	A free and Open Source Ecommerce Shopping Cart solution based on ASP.NET CORE and MongoDB.	ASP.NET
C#: nopCommerce	A free open-source ecommerce shopping cart (ASP.NET Core).	ASP.NET
Elixir: Avia	Avia is written in Elixir and leverages all the benefits of the Erlang runtime. It comes with ElasticSearch and Kibana out of the box.	Phoenix
Go: QOR	QOR is a set of libraries written in Go that abstracts common features needed for business applications, CMSs, and E-commerce systems.	None
Java: Shopizer	An open customizable e-commerce solution to help you create secure, fast and reliable online stores, marketplaces and B2B applications.	Spring
JS: Reaction	Reaction is a customizable, real-time reactive, JavaScript commerce platform.	Meteor
JS: Vue Storefront	PWA for eCommerce. 100% offline, platform agnostic, headless, Magento 2 supported.	Magento
JS: Svelte Commerce	eCommerce storefront for Litekart.in, Shopify, MedusaJs	Node
JS: Vendure	Headless commerce platform built with customization and developer experience in mind.	Nest.js
JS: MedusaJS	A customizable headless commerce platform focused on delivering an exceptional developer experience.	Express.js
JS: Evershop	Your All-in-One open source ecommerce solution.	Express.js
PHP: Aimeos-Laravel	Aimeos is a professional, full-featured and ultra fast e-commerce package for Laravel	Laravel
PHP: Avored	Avored is a Laravel Open Source Shopping Cart	Laravel
PHP: Bagisto	A Free and Opensource laravel eCommerce framework built for all to build and scale your business.	Laravel
PHP: Magento Open source	Magento Open Source eCommerce delivers the features you need to build and grow a unique online store from the ground up.	Magento
PHP: Opencart	A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.	Opencart
PHP: OroCommerce	An open-source Business to Business Commerce platform.	OroCommerce
PHP: PrestaShop	PrestaShop offers a fully scalable open source ecommerce solution.	PrestaShop
PHP: Sylius	Sylius is an Open Source eCommerce Framework on top of Symfony.	Symfony
PHP: Thelia	Thelia is an open source tool for creating e-business websites and managing online content.	Symfony
PHP: Vvveb	Powerful and easy to use CMS to build websites, blogs or eCommerce stores.	Vvvveb
PHP: Yupe	Yupe! is an open source Yiiframework-based online e-commerce solution.	Yii
PHP: WooCommerce	A customizable, open-source ecommerce platform built on WordPress.	WordPress
Python: Django-Oscar	A domain-driven e-commerce for Django	Django
Python: Saleor	A modular, high performance e-commerce storefront built with Python, GraphQL, Django, and ReactJS.	Django
Python: Shuup	A Django-based open source e-commerce platform.	Django
Ruby: Sharetribe	Sharetribe Go is an open source marketplace platform, also available with SaaS model. See also Sharetribe Flex, a headless marketplace solution.	Ruby on Rails
Ruby: Solidus	Solidus is a complete open source ecommerce solution built with Ruby on Rails. It is a fork of Spree.	Ruby on Rails
Ruby: Spree	Spree is a complete, modular & API-driven open source ecommerce solution for Ruby on Rails.	Ruby on Rails

Company	Description	Alternative to
Cortex	Production infrastructure for machine learning	AWS SageMaker
MindsDB	In-database machine learning platform	BigQuery ML
Ploomber	YAML-based pipeline builder for ML models	AWS SageMaker
Seldon	Deployment & monitoring for machine learning at scale	AWS SageMaker, Google Vertex AI
Zilliz's Towhee	Platform for generating embedding vectors	AWS SageMaker

Company	Description	Alternative to
Cube.js	Headless business intelligence suite	Looker
LightDash	Low-code metrics layer, alternative to Looker	Looker
MLCraft	Low-code metrics layer, alternative to Looker	Looker
MetriQL	Headless business intelligence suite	Looker

Company	Description	Alternative to
Grafana	Observability and data visualization platform	DataDog, NewRelic
Sentry	Application monitoring with a focus on error reporting	DataDog, NewRelic
Signoz	Application monitoring and observability platform	DataDog, NewRelic
VictoriaMetrics	Application monitoring and observability platform	DataDog, NewRelic
Netdata	Application monitoring and observability platform	DataDog, NewRelic
Chaos Genius	ML powered analytics engine for outlier/anomaly detection and root cause analysis	AWS Lookout, Anodot, Sisu Data, Outlier

Detail Pages:

"/e/" OS A mobile operating system that describes itself as being “forked from Android and completely ‘ungoogled.’”
8Base A Serverless GraphQL Backend-as-a-Service.
Ably A simple API that handles everything realtime, and lets you focus on your code.
Adalo Mobile app-builder tool.
Aleo Full-stack, secure applications with zero knowledge on layer 1.
Amiga Forever Relive the Amiga with this official emulator that keeps getting new features
Amplication Open-source application development tool.
Android The Android mobile platform.
Android and Windows A collection of links/articles on Android support in Windows (11).
Android Device Bus (adb) The Swiss-Army knife command-line tool for Android development against either emulator AVD or physical device.
Android Jetpack Collection of Kotlin-based libraries for making Android development easier/faster/etc.
Android Jetpack Compose The functional-composition way to build UIs in Android; "Jetpack Compose is Android’s modern toolkit for building native UI. It simplifies and accelerates UI development on Android".
Android OSS A collection of Android OSS links.
Android Performance Tools and practices for Android performance testing and tuning.
Android platform testing Links and notes on how to unit- (and other) test on Android.
Android Security Tools and practices for Android app security.
Anvil Build web applications using nothing but Python.
Anytype A next-generation software that breaks down barriers between applications, gives back privacy and data ownership to users.
Apache.org The Apache site is a collection of numerous open-source projects, in all stages of life (incubating, maintained, archived).
Apache Royale A productive, open-source frontend application technology that lets you code in MXML and ActionScript3 and output to different formats.
Apex A strongly typed, object-oriented programming language that allows developers to execute flow and transaction control statements on Salesforce servers in conjunction with calls to the API. Using syntax that looks like Java and acts like database stored procedures, Apex enables developers to add business logic to most system events, including button clicks, related record updates, and Visualforce pages. Apex code can be initiated by Web service requests and from triggers on objects.
Appian Enables developers to rapidly build solutions for enterprise business needs, such as defining applications that support a customer journey, optimize business operations, and enforce compliance with policies and regulations.
AppSmith An open source web framework for building internal tools, admin panels, dashboards, and workflows. Appsmith lets you drag-and-drop components to build dashboards, write logic with JavaScript objects and connect to any API, database or GraphQL source.
Appwrite An open-source platform that provides web and mobile developers with a set of easy-to-use and integrate REST APIs to manage their core backend needs.
ARAnyM (Atari Running on Any Machine) Run the operating system from the Atari on pretty much any machine you own
Arduino A platform for building embedded systems.
ASP.NET/ASP.NET Core Microsoft's HTML/HTTP server-side framework.
Averest Model-based design of reactive embedded systems.
Awesome (lists) (Project Awesome) A curated collection of lists.
Backstage An open platform for building developer portals.
Backstage An open source framework for building developer portals.
Banan-OS A new OS written (almost) entirely in C++ from scratch that already supports many features of modern-day operating systems.
Baserow Open source no-code database and Airtable alternative.
BEAM (Erlang platform) Platform and virtual machine for Erlang and other languages.
Beehive An open source event and agent system, which allows you to create your own agents that perform automated tasks triggered by events and filters. It has modules to interface with, talk to, or retrieve information from Twitter, Tumblr, Email, IRC, Jabber, RSS, Jenkins, Hue etc.
BeeWare A collection of tools and libraries, each of which works together to help you write cross platform Python applications with a native GUI.
Bildr All-in-one platform for visual web app development. The full stack is handled so you can focus on building with all the powers of a seasoned developer at hand.
Bit An open-source standard infrastructure for web components.
Blocs Component-based visual website builder.
BondLayer Visual website and mobile app builder.
BonitaSoft Reinvent and automate your business processes with the Bonita open source Digital Process Automation platform. Deliver automation projects rapidly and continuously and increase visibility for insights to improve your processes.
Boomi Flow Caters to automation use cases, mobile applications, embedded workflows, and organizational collaboration.
Bottles An application that allows you to easily manage windows prefixes on your favorite Linux distribution.
Bottles Easily run Windows software on Linux with Bottles.
Browsers (Web) Standardized web browser programming.
BSD-derived OSes Collection of links and notes on *BSD operating systems.
Bubble Web application builder.
Budibase An open-source low code platform that helps you build and self-host internal tools in minutes.
Buffalo A Go web development eco-system, designed to make your life easier.
Builder Drag and drop page builder and CMS.
Butler A virtual operating system (written in Haskell) that runs multi-players applications on the web.
Cadence Fault-Tolerant Stateful Code Platform
CAL / OpenQuark A lazy functional programming framework and language for the JVM.
Calibre Kindle-like e-book management tool.
Capacitor An open source native runtime for building Web Native apps.
Caspio Helps businesses build custom applications by optimizing customer experiences and internal workflows.
CaylixOS A mobile operating system with greater emphasis on security.
Chicago95 Now you can (sort of) use Windows 95 on modern hardware without all the malware
Chrome (browser) (Chrome) Extensions are software programs that customize the browsing experience. They enable users to tailor Chrome functionality and behavior to individual needs or preferences. They are built on web technologies such as HTML, JavaScript, and CSS.
Chromium An open-source browser project that aims to build a safer, faster, and more stable way for all Internet users to experience the web.
Chromium OS An open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web.
CLIPS A forward-chaining rule-based programming language/platform/engine written in C that also provides procedural and object-oriented programming facilities.
Cloudboost Cloud platform for your app; similar to Parse + Firebase + Algolia + Iron.io all combined into one.
CLR A stack-based bytecode virtual machine.
CLR Interoperability Links for the interoperability between the Common Language Runtime (CLR) and other platforms.
CLR Specifications Specification links for the Common Language Runtime (CLR).
Clutch Component-based web application designer/builder.
Codenameone A Write Once Run Anywhere mobile development platform for Java/Kotlin developers.
Concrete CMS for teams.
Coolify Self-hostable Heroku alternative.
Corewars A game of warrior vs warrior, programmed by two opponents, and placed into a virtual 'ring' to fight to the death.
CoronaSDK Cross-platform framework ideal for rapidly creating apps and games for mobile devices and desktop systems.
Cortex Enterprise internal developer portal built to accelerate the path to engineering excellence.
Cosmos Cosmos is an operating system "construction kit". Build your own OS using managed languages such as C#, VB.NET, and more!
Cosmos The Most Secure and Easy Selfhosted Home Server.
Crust Open-Source Low-Code Platform and Salesforce Alternative
Curl Richer Internet Applications: the Curl language, development environment, runtime engine, and development libraries.
Cygwin An implementation of POSIX APIs on Win32, with accompanying *nix applications and libraries.
Darling A translation layer for Linux to allow execution of macOS programs.
Daytona A self-hosted and secure open source development environment manager.
DBOS A Database-Oriented Operating System.
Decker A multimedia platform for creating and sharing interactive documents, with sound, images, hypertext, and scripted behavior.
Deno A NodeJS-esque platform using V8 seeking to fix some of Node's quirks.
Developer Platforms Notes and links on "developer platforms", a la "internal developer platform".
Directus Headless CMS & API for Custom Databases.
Discourse A platform for community discussion.
Docker Virtualization tool for containerizing code, configuration, and sometimes data as part of a deployment.
Docker/Container conversions a container-to-wasm image converter that enables to run the container on WASM.
Docker-Compose Running multiple Docker images collectively.
DOS The original desktop operating system.
Dotnet Core CLR Open-source implementation of the CLR.
Draftbit Visual mobile app builder.
DragonflyBSD Originally forked from FreeBSD 4.8, now developed in a different direction
DTrace A performance analysis and troubleshooting tool that is included by default with various operating systems, including Solaris, Mac OS X and FreeBSD.
Ecere A comprehensive API for building apps ranging from games to business, for desktop, mobile and web platforms.
EFI (Executable Firmware Interface) The specification (describing PE files as the standard) for executable format in EFI environments.
Elemental low-code platform A standards based, open low-code development platform built on nodejs with the ability to fallback to writing raw nodejs code when the provided tools cannot solve your problems.
EmuDevz A game about coding emulators!
Endless OS Laptop, key, and OS, all for humanitarian purposes.
Endor One-click development sandboxes; run your favorite server software inside your browser.
Event-Driven .NET An Event Driven Microservices Platform for .NET.
Event Processing Language (EPL) A language, compiler, and runtime for complex event processing (CEP) and streaming analytics.
Exegol A community-driven hacking environment, powerful and yet simple enough to be used by anyone in day to day engagements.
Firebase A (pseudo)real-time NoSQL that also has platform capabilities.
Firefox (browser) The Firefox browser as a platform.
Flapjax A new programming language designed around the demands of modern, client-based Web applications.
Flint Low-code development platform based on kubernetes.
Flogo An open source, resource efficient, Go-based ecosystem for building event-driven apps. It is designed to abstract the event processing paradigm from event consumption enabling devs to build once, consume from anywhere and process using any of the supported actions.
Flutter A functional/reactive cross-platform mobile framework.
Flutter Articles A functional/reactive cross-platform mobile framework.
Flutter Examples A functional/reactive cross-platform mobile framework.
Flutter for Windows Collection of links and research around using Flutter to build Windows apps.
Fonoster APIs for SMS, voice and video.
Force.com The Salesforce programming platform behind their CRM.
FormTools A powerful, flexible, free and open source PHP/MySQL script you install on your website for managing your forms and data.
FreeBSD An operating system used to power modern servers, desktops, and embedded platforms.
FreshRSS A free, self-hostable feed aggregator.
GameBoy Development Links and resources on building games for the GameBoy.
Ghost A powerful app for new-media creators to publish, share, and grow a business around their content. It comes with modern tools to build a website, publish content, send newsletters & offer paid subscriptions to members.
Glimesh Live streaming platform.
GNU MIX Development Kit (MDK) MIX is Donald Knuth's mythical computer as described in his monumental work The Art Of Computer Programming. As any of its real counterparts, the MIX features registers, memory cells, an overflow toggle, comparison flags, input-output devices, and a set of binary instructions executable by its virtual CPU.
GNU Smalltalk The FSF implementation of the Smalltalk language/platform.
GNUStep A foundation for a portable desktop environment (inspired by NeXTStep), seeking to be code-compatible with Apple's Cocoa.
GrapheneOS A mobile operating system
Grav A modern open-source flat-file CMS.
Guix An advanced distribution of the GNU operating system supporting transactional upgrades and roll-backs, unprivileged package management, and more. When used as a standalone distribution, Guix supports declarative system configuration for transparent and reproducible operating systems. It provides Guile Scheme APIs, including high-level embedded domain-specific languages (EDSLs) to define packages and whole-system configurations.
Haiku The open-source flag-bearer for the now-defunct Be operating system.
HBR's 10 Must Reads on Platforms and Ecosystems Notes from the book.
Hello A desktop system for creators with a focus on simplicity, elegance, and usability, using FreeBSD as the core operating system.
Hoppscotch OSS replacement for Postman for API testing/exploration.
HyperCard Apple's original "low-code" environment
HyperSQL Relational database written in Java.
ICodeBetter An opinionated low code platform that helps you code business applications in a better way.
IDL (Interactive Data Language) A programming language used for data analysis.
Inferno An operating system created by Bell Labs that uses the same 9P distributed file system protocol (in Inferno lingo known as ‘Styx’), but can also run as a virtual machine on top of other operating systems as well as directly on hardware (specially well suited for embedded environments thanks to not requiring a MMU).
Inform A natural-language interactive fiction game development language and platform.
Internal Web application builder optimized/intended for internal enterprise use.
iOS (Platform) The Apple mobile device operating system (on top of the open-source Darwin kernel).
iOS Accessibility Accessibility on the Apple mobile device operating system (on top of the open-source Darwin kernel).
iOS APIs and Design Design and APIs around the Apple mobile device operating system (on top of the open-source Darwin kernel).
iOS App launch process The process that takes place when launching an iOS app.
iOS AutoLayout Trying to understand how AutoLayout works.
iOS Concurrency Threads and queues on the Apple mobile device operating system (on top of the open-source Darwin kernel).
iOS Core Data Making sense of iOS Core Data.
iOS Debugging Debugging code on the Apple mobile device operating system (on top of the open-source Darwin kernel).
iOS Event Pipeline and Handling How do events get queued and dispatched in iOS?
iOS Foundation Using the Foundation frameworks on iOS.
iOS Open Source A collection of iOS-related OSS links
iOS Performance Performance and tuning the Apple mobile device operating system (on top of the open-source Darwin kernel).
iOS SwiftUI SwiftUI user-interface style for the Apple mobile device operating system (on top of the open-source Darwin kernel) UI.
iOS UI UI development for the Apple mobile device operating system (on top of the open-source Darwin kernel).
iPLAss Java-based open source low-code development platform for enterprise
Java/JVM Platform The platform originally built by Sun for the Java programming experience, now expanded to include a number of languages, a ton of enterprise specifications, and hundreds if not thousands of popular libraries.
Java Platform Specifications A collection of the various specifications (JavaEE, etc) that make up the Java platform
Java RMI Java's Remote Method Invocation distributed objects platform.
Jitsi Video conferences platform and SDK.
Joget An open source no-code/low-code application platform that combines the best of rapid application development, business process automation and workflow management.
JVM (Platform) Data-related Data storage and access on the JVM.
JVM Cross-Compilers A collection of links/tools to compiling either Java or JVM bytecode to other platforms.
JVM Security Collection of tools and practices around JVM security.
JVM Specifications Specification links for the Java Virtual Machine (JVM).
Kavita A fast, feature rich, cross platform reading (particularly comics) server.
Kivy Build and distribute beautiful Python cross-platform GUI apps with ease.
Knack Commercial no-code tool; at its core it is an easy online database.
KolibriOS Run an entire operating system on only a few MB of disk and memory space
Kubernetes An open source container orchestration engine for automating deployment, scaling, and management of containerized applications.
Kuzzle An Open Source backend solution that includes a scalable server, an HTTP/MQTT/websockets API, an admin console, plugins mechanism & a blazing fast real-time capabilities for search, pub/sub, geofencing or any complex use cases.
Lakka The open source game console; a lightweight Linux distro that transforms a small computer into a retrogaming console.
LineageOS A free and open source operating system for mobile devices.
Linux (OS) The original open-source operating system.
Linux and Gaming Various links and pages around using Linux to play games.
Linux Tools Discussions and topics around performance on the Linux OS.
LiveCode Commercial open-source cross-platform low-code (natural language expression) platform.
LLVM A compiler and back-end native compilation/linking toolchain.
LogSeq A privacy-first, open-source platform for knowledge management and collaboration.
Low-code platforms (definition, reading, etc) Reading and notes around low-code platforms.
Lowdefy An open-source low-code framework to build web apps, admin panels, BI dashboards, workflows, and CRUD apps with ease.
macOS (OS) The Apple operating system (on top of the open-source Darwin kernel) that ships with Apple computers.
macOS (OS) Development Writing code for the Apple operating system (on top of the open-source Darwin kernel) that ships with Apple desktop computers.
macOS (OS) usage Tips on using the Apple desktop operating system (on top of the open-source Darwin kernel) that ships with Apple computers.
macOS (OS) Virtual Machine Notes Running the Apple desktop operating system (on top of the open-source Darwin kernel) in a virtual machine.
macOS Open Source A collection of macOS-related OSS links
macOS Setup macOS Setup tools and scripts.
Mastodon a free, open-source social network server based on ActivityPub where users can follow friends and discover new ones. On Mastodon, users can publish anything they want: links, pictures, text, video. All Mastodon servers are interoperable as a federated network (users on one server can seamlessly communicate with users from another one, including non-Mastodon software that implements ActivityPub)!
Memory Management and Garbage Collection (reading and references) Papers, books, and thoughts around manual and automatic memory management (GC).
Mendix Commercial (free trial) low-code application development platform.
Meteor An open source framework for seamlessly building and deploying Web, Mobile, and Desktop applications in Javascript.
Microsoft PowerApps Low-code apps on Microsoft platform.
MingW32 Win32 port of GCC and other utilities for running on the Win32 platform.
Minix The classic educational operating system that was the inspiration and starting point for Linux.
MLIR A hybrid IR which can support multiple different requirements in a unified infrastructure.
Monaca Cross-platform hybrid mobile app development platform and tools in the cloud.
Naked Objects The practice of generating UI (and, optionally, persistence) directly from domain objects without compilation requirements.
NativeScript Single-source Javascript-based cross-mobile platform.
NetBSD A fork of BSD-derived operating systems.
Newspeak A language in the tradition of Self and Smalltalk, dynamic and reflective, but designed to support modularity and security.
NeXTSpace A desktop environment that brings a NeXTSTEP look and feel to Linux.
NHost An open-source Firebase alternative with GraphQL; easy-to-use, full-featured backend-as-a-service (Baas) for your web and mobile apps.
Nix/NixOS/nixpkgs A tool that takes a unique approach to package management and system configuration.
NodeJS (platform) A platform built around the V8 (Javascript) engine.
Node-RED An open-source flow-based development tool for visual programming developed originally by IBM for wiring together hardware devices, APIs and online services as part of the Internet of Things. Node-RED provides a web browser-based flow editor, which can be used to create JavaScript functions.
NsCDE Get a feel for how the Unix CDE used to be
Objective-C (Platform) The platform underlying the Objective-C (and, by extension, Swift) languages.
Ockam A suite of open source tools, programming libraries, and managed cloud services to orchestrate end-to-end encryption, mutual authentication, key management, credential management, and authorization policy enforcement – at massive scale.
OpenBSD A fork of BSD-derived operating systems.
OpenFin A web runtime and operating environment designed for enterprise app development.
OpenIndiana / illumos Open-source flavor of Solaris/illumos(?)
OpenResty Web software management and diagnostics platform(s)?
Open-SaaS A free, open-source SaaS app starter for React & Node.js with superpowers.
OpenTelemetry High-quality, ubiquitous, and portable telemetry to enable effective observability.
OpenVidu Platform and SDKs to build on-premises WebRTC video conferences.
OpenXava Low-Code Platform for Rapid Development of Enterprise Web Applications.
Operating System (Documentation Project) This independent project aims to be one of the best online resources available in public for all people who are looking for informations about operating systems and their producers. Facts about the history of operating systems are preserved in long term.
Operating System Implementation Links and notes on building an OS on top of hardware.
Opslevel An internal developer portal.
Oqtane An open source and cross-platform CMS and application framework for building modern digital experiences on .NET; composed of reusable web UI components implemented using C#, HTML, and CSS, with both the client and server code is written in C#.
Oracle Apex "World's most popular enterprise low-code application platform."
Outsystems Using visual, model-driven development, AI-powered tools that improve the entire application lifecycle, and a cloud-native platform, you can quickly and easily build, deploy and manage the software that makes a difference.
PhotonOS An open source, minimal Linux container host that is optimized for cloud-native applications, cloud platforms, and VMware infrastructure.
Plan9 A distributed research operating system developed at Bell Labs by the same team that created Unix and C. Over the years there have been four major releases or ‘Editions’; after the Fourth Edition the project adopted a ‘open source’ model and changes are published daily in a public repository; a distributed computing environment assembled from separate machines acting as CPU servers, file servers, and terminals. The pieces are connected by a single file-oriented protocol and local name space operations.
Plasmic Visual web app builder on top of React.
Platformatic The foundation for running high-performance Node.js apps and efficient development teams.
Play Visual app builder intended for use on mobile devices. "Design, test and share powerful mobile products—directly from your mobile device."
Porter Kubernetes powered PaaS that runs in your own cloud
Potassco (clingo, gringo, clasp, clingcon, aspcud, asprin) The POTsdam Answer Set Solving Collection, bundles tools for Answer Set Programming (ASP), which offers a simple and powerful modeling language to solve combinatorial problems.
PowerLoom a language and environment for constructing intelligent, knowledge-based applications using a fully expressive, logic-based representation language (a variant of KIF) and a natural deduction inference engine that combines forward and backward chaining to derive what logically follows from the facts and rules asserted in the knowledge base.
Prefect "Build, run, and monitor data pipelines at scale." Use a flexible Python framework to easily combine tasks into workflows, then deploy, schedule, and monitor their execution through the Prefect UI or API.
Project Reactor A fourth-generation reactive library, based on the Reactive Streams specification, for building non-blocking applications on the JVM.
Prompto Platform and differing-syntax languages for cloud development.
PumpkinOS A PalmOS-compatible.
Puter Cloud-hosted OS-like platform.
Python A dynamic language and platform.
Qemu A Unix clone.
Qovery Kubernetes powered PaaS that runs in your own cloud.
Quarkly Design tool for creating websites and web apps.
QuickBase An application development platform that unites business and IT teams by enabling problem solvers of any technical background to work together to safely, securely and sustainably create an ecosystem of applications.
Quix An end-to-end framework for real-time Python data engineering, operational analytics and machine learning on Apache Kafka data streams.
Racket Racket language/platform is a Lisp, but has numerous language implementations built on it.
ravynOS An OS aimed to provide the finesse of macOS with the freedom of FreeBSD.
React Native An implementation that takes React source and executes it on mobile devices.
ReactOS The open-source Windows clone.
Realm (Realm Database, Realm Object Server) Object database intended as a replacement for SQLite and other mobile data storage systems.
Rebol A lean, extensible platform that operates over a variety of operating systems and devices.
Redline Smalltalk Smalltalk implementation for the JVM.
Redox A Unix-like Operating System written in Rust, aiming to bring the innovations of Rust to a modern microkernel and full set of applications.
Relate Website builder
Remult A CRUD framework for full-stack TypeScript.
Replicant A mobile operating system focusing more on older devices.
Retool Build internal tools, remarkably fast.
Rhodes (RhoMobile, RhoConnect, RhoStudio, RhoSuite, ...) Develop native cross-platform apps for iOS, Android, WinCE/WM, Windows Phone using web technologies and code on Ruby or JavaScript.
Rintagi Open-source low-code development platform for mission-critical applications.
Rowy An open-source Airtable-like UI for your database and to build serverless cloud functions visually in the context of your data.
RubyMotion Bridge for writing cross-platform apps in Ruby.
Safari (Browser) The Apple macOS/iOS Web browser as a platform.
SAFE Stack Full-stack web development based on F# throughout each layer.
Saltcorn A platform for building database web applications without writing a single line of code. Use the intuitive point-and-click, drag-and-drop user interface to build the whole application
Scratch VM Virtual Machine used to represent, run, and maintain the state of programs for Scratch 3.0.
SeaTable A new kind of spreadsheet/database and data automation application. It helps you to easily record and manage all kinds of scattered information. With built-in automation features, scripts and APIs, you can automate data processing with no code or little code.
Self An object-oriented programming language based on the concept of prototypes.
Selfie An educational software system of a tiny self-compiling C compiler, a tiny self-executing RISC-V emulator, and a tiny self-hosting RISC-V hypervisor.
SerenityOS Graphical Unix-like operating system for x86 computers. Roughly speaking, the goal is a marriage between the aesthetic of late-1990s productivity software and the power-user accessibility of late-2000s *nix.
Sharemind The next generation of data-driven services with end-to-end data protection and accountability.
Simpl Platform for developing process-controlled applications with Web front end.
Singularity From-scratch re-imagination of an operating system from Microsoft Research.
Skyve an open-source platform that gives you access to all of the key capabilities need to build sophisticated, robust and scalable cloud solutions. Skyve is platform/operating-system independent, works with all common database types, and is accessible through all common browsers and devices.
Slate A prototype-based, multi-dispatch object-oriented language that runs from a highly-customizable live environment; the implementation is highly portable and relatively lightweight.
Solar2D Lua based game engine with focus on ease of iterations and usage.
Space Cloud Serverless cloud deployment platform.
Spoofax Language Workbench A platform for developing textual (domain-specific) programming languages.
Squeak Open-source Smalltalk system.
StackStorm A platform for integration and automation across services and tools, taking actions in response to events; event-driven automation for auto-remediation, security responses, troubleshooting, deployments, and more. Includes rules engine, workflow, 160 integration packs with 6000+ actions (see https://exchange.stackstorm.org) and ChatOps.
Stirling-PDF Self-hosted PDF infrastructure and tooling.
Strapi Node.js Headless CMS to build customisable APIs.
Sulu Modern Symfony based CMS.
Suneido A complete, integrated application platform – a system for developing and deploying applications without the frustrations of integrating multiple different products.
Supabase Backend server with REST APIs to manage core backend needs.
Supercollider An audio server, programming language, and IDE for sound synthesis and algorithmic composition.
SvarDOS An open-source project that is meant to integrate the best out of the currently available DOS tools, drivers and games.
Tabris Native mobile apps in JavaScript. TypeScript is a first class citizen for app development with Tabris.js.
Tangled A new social-enabled git collaboration platform built on atproto.
TikiTrackers A full-featured, tightly integrated, Free / Libre / Open Source, multilingual (40+ languages), all-in-one Wiki+CMS+Groupware, written in PHP and actively developed by a very large international community. Major features include articles, forums, newsletters, blogs, file and image galleries, wiki, bug and issue trackers (form generator), calendar, RSS feeds, category system, tags, advanced permission system for users and groups, and more.
Tina Visual editor for React websites.
Tink Access a broad range of high-quality financial data from banks across Europe through a single API. So you can provide smart financial services – or engaging new customer experiences.
Toit Python-inspired language for ESP32 microcontrollers.
Tooljet An open-source low-code framework to build & deploy internal tools with minimal engineering effort.
TotalJS A collection of server-side & client-side JavaScript/Node.js libraries, Web Components, icons, practices, and complete apps written in pure JavaScript, mostly without dependencies.
Tsuru Open-source extensible Platform as a Service.
Twilio Commercial platform for various (human) communication (SMS, video, etc).
Twine A language/platform for creating interactive fiction.
Twitch Commercial live streaming platform.
Ubuntu Touch A mobile version of the Ubuntu operating system for mobile devices.
UEFI (Unified Extensible Firmware Interface) A new model for the interface between personal-computer operating systems and platform firmware; the interface consists of data tables that contain platform-related information, plus boot and runtime service calls that are available to the operating system and its loader. Together, these provide a standard environment for booting an operating system and running pre-boot applications.
UI Bakery Internal/enterprise web application builder.
Universe Visual website builder from mobile devices.
Unqork A no‑code application platform that helps organizations build enterprise‑grade software faster, avoid legacy code, reduce production issues, and lower total cost of ownership
Ur (Ur/Web) A programming language in the tradition of ML and Haskell, but featuring a significantly richer type system. Ur is functional, pure, statically typed, and strict. Ur supports a powerful kind of metaprogramming based on row types.
Urbi Component Software Platform (Urbi) & Concurrent Programming Language (urbiscript).
Vanilla A platform for community discussion.
VanillaOS An Ubuntu-based distro that aims to provide a stock GNOME experience with on-demand immutability and the freedom to choose packages.
VanillaOS An Ubuntu Linux-based Point Release distribution that receives updates at the right time, neither before nor after, without sacrificing security and functionality.
VirtualBox Virtualization layer/UI for most platforms.
Virtual TableTop A virtual surface in the browser on which you can play board, dice and card games.
Visly (Figma) Build React components visually
Visual Studio Code Microsoft's bid to replace emacs.
Wappler A leading producer of low code, visual productivity tools for creating rich data driven, highly interactive web sites and mobile apps.
WasmCloud Build applications in any language. Deploy them anywhere.
Wasm Interface Types (WIT) Defining interfaces in WebAssembly.
Wasm-tools A collection of tools for WebAssembly modules and components.
Web analytics Tools/platforms/notes on gathering metrics about web pages.
WebAssembly A portable multi-environment-targeting bytecode format for the Web.
Web Assembly Component Model Notes and links on the concept.
WebAssembly for .NET Create, read, modify, write and execute WebAssembly (WASM) files from .NET-based applications.
Webflow Empowers designers to build professional, custom websites in a completely visual canvas with no code.
Webiny Enterprise serverless CMS.
WebVM A server-less virtual Linux environment running fully client-side in HTML5/WebAssembly.
Web Worker API A background browser task that can be created via script, which can send messages back to its creator.
WinBoat Run Windows apps on Linux with seamless integration.
WinBoat Run Windows apps on Linux with seamless integration.
Windows (OS) The Microsoft operating system that has gone through several iterations since its humble beginnings as a standalone graphical user interface system on top of DOS.
Windows (OS) Development links and notes on the Microsoft Windows OS.
Windows Debugging Debugging the Windows operating system.
Windows Internals Notes and links on the internals of the Windows operating system.
Wine A translation layer for Linux allowing for the execution of Windows programs.
Wine Compatibility layer that translates Windows system calls to Linux-friendly ones.
XCode (Development tool/platform) Apple's IDE and tools for development on iOS and macOS.
xlang A project from Microsoft enabling cross-language/platform API consumption
XOOM DDD naked objects-like platform for low-code to full-code reactive, event-driven apps and microservices.
Xv6 A simple Unix-like teaching operating system.
Yaade An open-source, self-hosted, collaborative API development environment.
Yao A low code engine to create web services and dashboard
Ylang A universal dynamic tracing language that targets various dynamic tracing frameworks and toolchains.

Last modified 02 November 2025

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