:100:Go Struct and Field validation, including Cross Field, Cross Struct, Map, Slice and Array diving
- validation
- translation
- error-handling
Repository Index
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Awesome list of open-source startup alternatives to well-known SaaS products 🚀
- awesome
- awesome-list
- python
- startups
The best free and open-source automated time tracker. Cross-platform, extensible, privacy-focused.
- quantified-self
- activitywatch
- productivity
- time-tracking
An open-source screen recorder built with web technology
- screen-recorder
- javascript
- electron
- mac
Rust GUI components for building fantastic cross-platform desktop application by using GPUI.
- gpui
- desktop-application
- uikit
- rust
Cocos2d-x is a suite of open-source, cross-platform, game-development tools utilized by millions of developers across the globe. Its core has evolved to serve as the foundation for Cocos Creator 1.x & 2.x.
- cocos2d
- cocos2d-x
- game-engine
- c-plus-plus
Simple, secure & standards compliant web server for the most demanding of applications
- websockets
- http
- pubsub
- router
Audio Editor
A quick example of how one can "synchronize" a 3d scene across multiple windows using three.js and localStorage
Jargon from the functional programming world in simple terms!
- functional-programming
- fp
- awesome-list
- education
ARIS ⚔️ (Auto-Research-In-Sleep) — Lightweight Markdown-only skills for autonomous ML research: cross-model review loops, idea discovery, and experiment automation. No framework, no lock-in — works with Claude Code, Codex, OpenClaw, or any LLM agent.
- ai-research
- autonomous-agent
- claude-code
- codex
Open source simulator for autonomous vehicles built on Unreal Engine / Unity, from Microsoft AI & Research
- drones
- ai
- self-driving-car
- autonomous-vehicles
A framework for building Mobile cross-platform UI
A cross-platform, safe, pure-Rust graphics API.
.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
- dotnet
- hacktoberfest
- help-wanted
GenBI (Generative BI) for AI agents, an open-source, governed text-to-SQL through an open context layer that turns natural-language questions into trusted dashboards, charts, and SQL across 20+ data sources, such as BigQuery, Snowflake, PostgreSQL, ClickHouse, Amazon Redshift, Databricks and more.
- bigquery
- duckdb
- llm
- postgresql
ImageMagick is a free, open-source software suite for creating, editing, converting, and displaying images. It supports 200+ formats and offers powerful command-line tools and APIs for automation, scripting, and integration across platforms.
- imagemagick
- image-conversion
- image-manipulation
- image-processing
swagger-codegen contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition.
Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.
- game-engine
- strategy-game-engine
- csharp
- cross-platform
Mars is a cross-platform network component developed by WeChat.
Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.
This open-source curriculum introduces the fundamentals of Model Context Protocol (MCP) through real-world, cross-language examples in .NET, Java, TypeScript, JavaScript, Rust and Python. Designed for developers, it focuses on practical techniques for building modular, scalable, and secure AI workflows from session setup to service orchestration.
- csharp
- java
- javascript
- mcp
Build realtime web, mobile and desktop apps in Python only. No frontend experience required.
DOMPurify - a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMPurify works with a secure default, but offers a lot of configurability and hooks. Demo: