01Open source
Repos
Open-source repos worth knowing, by the problem they take on.
AI & Agents
Bilibili Index Translate
Bilibili's open multilingual translation model family built on Qwen3.5 supporting 150 languages, with instruction following for terminology and formatting. Released under Apache-2.0 with a free public OpenAI-compatible API offering immediate zero-GPU access.
Xyne Spaces
Juspay's organizational context layer that normalizes enterprise data from Slack, Google Workspace, and Microsoft 365 into a permission-aware store for humans and agents. It provides collaborative apps and APIs that serve different slices of data based on caller permissions.
AOCI Code Index
A local-first MCP server and CLI in Go that creates a Git-versioned map of your codebase and database schema for coding agents. It gives Claude Code, Codex, Cursor, and opencode persistent system context so they stop re-reading the repo on every task.
Game Dev
Fennara Godot AI
Fennara gives AI assistants a live connection to the Godot editor through MCP support or an in-editor chat dock, letting agents inspect scenes, scripts, and screenshots. It stands out as practical AI tooling for Godot teams already using MCP-capable apps like Claude, Cursor, and Codex.
Mibo
Mibo is an F# game framework built around the Elmish MVU pattern, with templates for 2D projects and support for runtimes like MonoGame and raylib. It is notable as a lean, code-first option for developers who want functional game programming without editor-heavy tooling.
Godot MCP
Godot-MCP is a C# editor addon that exposes Godot operations as MCP tools so AI agents can create nodes, edit scenes, manage resources, and capture screenshots. It is notable as the Godot counterpart to Unity-MCP, with permissive licensing and support for hosted or custom backends.
OpenFaceFX Lip Sync
OpenFaceFX is an open-source lip-sync pipeline that converts audio plus transcript into viseme animation curves for use in any engine. It is notable for offering MIT-licensed, deterministic FaceFX-style facial animation using only NumPy, without machine learning.
Godot Coop
Godot-coop adds real-time collaboration to the Godot editor, syncing scenes, scripts, files, settings, selections, and cameras across users as they work. It is notable for bringing Google Docs-style multiplayer editing and shared project hosting directly into Godot.
Unity Configurators
Configurators is a Unity package for defining gameplay rules as serializable data that can be assembled, reordered, and tuned directly in the Inspector. It is notable for enabling allocation-free, inspector-driven behavior composition with support for dependencies, async steps, and reactive conditions.
ArcadeMaker Game Engine
ArcadeMaker is a cross-platform 2D game engine built in C# that includes its own custom programming language and integrated IDE, using MonoGame for graphics and audio to export to desktop, mobile, and consoles. It is notable for combining a bespoke language, IDE, and engine in one ongoing open-source project.
Robotics
FlashSAC RSL-RL
This repository provides an implementation of the FlashSAC reinforcement learning algorithm for IsaacLab environments. It enables fast and stable off-policy learning for high-dimensional robot control tasks, such as rough-terrain locomotion.
Jumper Crab Robot
Jumper is an open-source, 22-DoF crab robot hardware platform designed for educational purposes and motion training. It features extensive documentation and AI-assistant integration to help users design appearances and behaviors.
BAGEL ROS Bag Visualizer
BAGEL is a browser-based visualizer for ROS1 and ROS2 bag files, point clouds, and Gaussian Splats. It operates as a fully static web application requiring no installation, offering a convenient debugging tool for robotics engineers.
Calibra Dataset Observability
Calibra offers dataset observability and coreset selection tools for robotics imitation learning. It audits data integrity to optimize training sets, significantly reducing data volume while maintaining or improving model performance.
LeRobot Android Controller
This project enables an Android phone to function as the controller for a LeRobot mobile robot, replacing a Raspberry Pi. It is a cost-effective solution that leverages built-in phone hardware like cameras, 5G, and NPUs without requiring root access.
Graph as Policy
Graph-as-Policy (GaP) is a robotics framework that compiles natural-language instructions into typed, verified skill graphs for execution on real robots. It targets 'Variational Automation' to ensure persistent reliability across varying tasks, offering a transparent alternative to black-box policies.
BICMap Robotics SDK
BICMap is a WebGL-based SDK for visualizing robotics data, including SLAM maps, point clouds, and navigation paths. Built on MapLibre and Three.js, it provides developers with pre-packaged tools for creating integrated indoor-outdoor robotic scenes.
Science & Simulation
Rumoca Modelica Compiler
Rumoca is a Rust-native Modelica compiler that converts Modelica package trees into high-quality symbolic systems for scientific computing, optimization, machine learning, and code generation workflows. It can run in a browser via WASM and targets environments like JAX.
Nutils Project
Nutils is a Python library for Finite Element Method computations with a readable, math-centric syntax and strict separation of topology and geometry. Its support for automatic differentiation and compact workflow construction makes it well suited for building flexible simulation pipelines.
Parallel Ice Sheet Model
PISM is an open-source, parallel, high-resolution ice sheet model supporting multiple stress balances, marine ice sheet physics, dynamic calving fronts, and coupling to atmosphere and ocean models. It is a widely used infrastructure for climate and glaciology research.
ClimaCore.jl Dynamical Core
ClimaCore.jl is a GPU-capable dynamical core for the CliMA Earth System Model, providing composable spectral-element and finite-difference tools for discretizing PDEs on spherical and Cartesian domains. It targets researchers building high-performance climate simulations.
Gas Dynamics Toolkit
The Gas Dynamics Toolkit is a collection of programs and functions, written mainly in D, for simulating high-speed gas flows, including the compressible flow solver Eilmer. Developed at the University of Queensland, it supports research and teaching in hypersonics and high-speed fluid dynamics.
Meshpy Mesh Generator
MeshPy is a Python interface to 2D/3D simplicial mesh generators such as Triangle, TetGen, and gmsh. It is a practical mesh generation tool for finite element pipelines and related numerical workflows.
Systems & Languages
Leo Language
Leo is a statically-typed language for building zero-knowledge applications with formal verification capabilities. It enables developers to write private applications with mathematical correctness guarantees, representing substantial compiler engineering for the ZK ecosystem.
Tengo Language
Tengo is a small, dynamic scripting language for Go that compiles to bytecode executed on a stack-based VM. It provides a fast, secure embedded scripting solution for Go applications, combining simplicity with native Go performance.
Accelerated HW Synthesis
XLS is Google's hardware synthesis compiler that converts high-level code into hardware designs. It accelerates hardware development through modern compiler infrastructure, making it notable for novel approaches in hardware synthesis tooling.
Ballerina Language
Ballerina is a cloud-native programming language optimized for integration and microservices with built-in support for JSON and XML. Developed by WSO2, it features a strong concurrency model and remains actively maintained for network service development.
Wing Language
Wing is a cloud-oriented programming language that unifies infrastructure definitions and runtime code in a single model. It allows developers to write portable cloud applications testable locally via simulator, addressing infrastructure-as-code fragmentation.
Sway Language
Sway is a Rust-inspired smart contract language for the Fuel blockchain. It brings modern type safety and performance optimizations to blockchain development, distinguishing itself through production-ready safety features and high development momentum.
Torch-MLIR
Torch-MLIR bridges PyTorch and the MLIR compiler ecosystem, providing first-class compiler support between the two. It serves as critical infrastructure for ML compilation, though currently in LLVM incubator status rather than official releases.
This Week's Movers
KytyPS5 Emulator
KytyPS5 is a free, open-source PlayStation 5 emulator written in C++ for Windows, Linux, and macOS. It is under active development with weekly updates and represents significant engineering effort to emulate modern console hardware.
Microduck Biped Robot
Microduck is open-source software from Pollen Robotics that controls a 25 cm biped duck robot using neural policies and fifteen servos. It runs on a Rockchip RK3566 and includes the full stack from control loops to over-the-air updates.
DeskBox Desktop Organizer
DeskBox is a free, open-source Windows desktop organizer built with WinUI 3 that provides widgets for files, todos, notes, and search. It offers a modern alternative to tools like Stardock Fences while backing widgets with real folders.
Trending Overall
Web Motion Animation
oil-motion is an interaction animation library for web applications that responds to scrolling, dragging, and pointer movements. It is notable for its utility in the Chinese developer community and its active maintenance under the MIT license.
Next Generation E2E Testing Framework
tester-army/e2e is an end-to-end testing framework for web and mobile apps that uses natural language goals to drive autonomous agent actions with assertions. It is notable for its organization-backed approach to complex testing scenarios and active development.
Android APK Reverse Engineering
apk-reverse is an agent skill designed for Android APK reverse engineering, including dex patching and repacking. It is notable for its structured approach to mobile security analysis and for being a tool rather than a tutorial for AI agents.
Interactive 3D Anatomy Explorer
anatomy is an interactive 3D human anatomy explorer built using Three.js. It is notable for its modern web-based interface despite being built on an older GPT-5.6 foundation and having limited recent updates.
Fieldwatch Observer
Fieldwatch is a passive Android application for observing Wi-Fi access points and Bluetooth LE advertisements nearby. It is notable as a privacy-focused security tool that operates entirely offline without dongles or accounts.
Independent CarPlay Receiver
DiPlay is an open-source application that enables CarPlay on compatible Android head units, specifically targeting BYD vehicles. It is notable for solving a specific Android/CarPlay integration problem with early community traction and a GPL-3.0 license.
Run Omarchy on MacOS
try-omarchy allows running the Omarchy desktop environment on macOS using a QEMU-based runtime with Apple Hypervisor Framework. It is notable for providing a hardware-accelerated, zero-setup environment for developers using Apple Silicon.