01Open source
Repos
Open-source repos worth knowing, by the problem they take on.
Crypto & Web3
README Bitcoin Chain
A small Bitcoin-like chain whose canonical ledger is my README. Proof of work is subset-sum, not hashing.
Game Dev
Lineage 2 Elbera
A browser client and tools for porting Lineage II Interlude to the web, removing the need for an installed client. It includes a protocol gateway and Elbera Tools for research, conversion, and verification of original client assets.
Robotics
Robotics Coding Simulator
An open-source robotics simulator designed for AI coding agents, offering HTTP/JSON and MCP control, Newton physics, wgpu rendering, ROS 2 support, and reproducible benchmarks. Useful for agent-driven robot development.
Tactile Data Annotation
TLabel is a sensor-agnostic tactile data annotation toolkit that loads any tactile sensor and exports a unified 14-dimensional semantic schema. Fills a genuine gap in cross-sensor tactile annotation for manipulation data.
LiDAR Inertial SLAM
ROS2 LiDAR-inertial SLAM with multi-session alignment, built on rko_lio odometry or custom odometry. Provides multi-session alignment for LiDAR-inertial systems from a credible lab.
Agentic 3D Modeling
Procedura turns text prompts into editable parametric CAD programs with named parts, typed mates, and optional PBR materials and articulation exports. Novel LLM-to-parametric-CAD approach with robotics potential.
Humanoid Soccer Shooting
Official codebase for RoboNaldo, training Unitree G1 humanoid soccer-shooting policies in Isaac Lab using motion-guided curriculum reinforcement learning. Academic work focused on accurate, stable, powerful free-kick policies.
Camera Only Drone
An autonomous quadrotor flying a MuJoCo obstacle course using only an onboard camera, with a small judgment model (TypeSafe Jev) at 2.5Hz for situational decisions. Novel camera-only approach with a small model in the loop.
Autonomous Drone Navigation
A ROS 2 workspace for PX4/Gazebo UAV navigation in GNSS-denied spaces using VIO, LIO, 3D occupancy mapping, D* Lite planning, and GPU MPPI obstacle avoidance. Targets DARPA SubT Urban; substantial GNSS-denied stack.
Science & Simulation
Freud Particle Analysis
freud is a Python library for efficient particle trajectory analysis, offering tools for computational chemistry and physics. It is notable as a solid, research-grade tool for a niche scientific audience.
MeteoInfo GIS
MeteoInfo is an integrated GIS and scientific computation environment for meteorology, providing visualization, analysis, and Jython scripting for spatial and meteorological data. It is notable as a mature, actively maintained domain tool.
Tesseract Core
Tesseract-core provides universal components for differentiable scientific computing, enabling workflows that span multiple tools, languages, and environments. It is notable as actively maintained AD infrastructure for physics from Pasteur Labs.
DataJoint Python
DataJoint Python implements a relational workflow model where database schemas define executable scientific data pipelines with provenance and immutability. It is notable as a reproducibility tool used in neuroscience research.
Discretize Tools
discretize provides finite volume discretization tools for inverse problems, forming part of the SimPEG ecosystem. It is notable for providing actively maintained, real numerical machinery for geophysical and other inverse problem applications.
Galpy Galactic Dynamics
galpy is a Python package for galactic dynamics, supporting orbit integration, distribution functions, and action-angle calculations, and is an astropy affiliated package. It is notable as a well-known research library in the astronomy community.
Conduit Data Exchange
Conduit is an LLNL open-source library for describing hierarchical scientific data across C++, C, Fortran, and Python, used for in-core data coupling, serialization, and I/O in HPC simulations. It is notable as production infrastructure actively used in large simulation codes.
Systems & Languages
GHDL VHDL Simulator
GHDL is an open-source analyzer, compiler, simulator, and experimental synthesizer for VHDL. It is notable for using GCC/LLVM backends to generate machine code for high-speed simulation.
Quarkdown Markdown
Quarkdown is a Markdown-based typesetting system that can produce papers, presentations, websites, books, and knowledge bases from a single project. It is notable for its novel compiler pipeline for documents.
Clasp Lisp Environment
Clasp is a Common Lisp implementation that interoperates with C++ libraries using LLVM for native code compilation. It is notable for embedding scientific computing libraries in a Lisp environment.
Shaderc Vulkan Tools
A collection of tools, libraries, and tests for Vulkan shader compilation, including glslc and libshaderc. It is an essential toolchain for graphics systems work, wrapping glslang and SPIRV-Tools.
Elm Compiler
Compiler for Elm, a functional language for reliable webapps. It is a pioneering functional language compiler that remains historically important despite slower development.
CompCert C Compiler
The CompCert formally-verified C compiler. It is notable for being formally verified using Coq, guaranteeing that generated assembly behaves as prescribed by the source C semantics.
Steel Bank Common Lisp
Steel Bank Common Lisp (SBCL) official repository mirror. It is a production-grade Common Lisp compiler and runtime known for its substantial systems work.
This Week's Movers
BrowserSkill AI Automation
A browser automation tool that lets AI agents use your real, logged-in Chrome or Edge browser through a CLI and extension. Tasks run in a separate Agent Window, and the bsk CLI works with Cursor, Claude Code, Codex, and other shell-capable agents.
Laya MLX Runtime
A native MLX runtime for Laya typed decision models running on Apple Silicon, achieving 7-14 ms short decisions without text generation, PyTorch, or cloud APIs. It provides local inference with open weights and benchmark scripts.
Scriptc Native Compiler
A TypeScript-to-native compiler that compiles TypeScript and JavaScript to typed IR, C, LLVM IR, assembly, native executables, and WebAssembly modules. It uses the TypeScript compiler for parsing and type checking without requiring Node in output.
Trending Overall
Spatiotemporal Programming Paradigm
This paper proposes a programming paradigm for spatiotemporal composability, addressing temporal revertibility and spatial reactivity in dynamic software composition. It targets foundational gaps in plugin systems and self-evolving agent harnesses.
Openmuse Personal Agent
OpenMuse is an open-source personal agent with browser, terminal, and file access that runs on iOS, Android, and web. It is built with CopilotKit and AG-UI, allowing it to work with any agent harness.
Pdfcn PDF Components
pdfcn provides free, ready-to-use, customizable PDF components for React, built on Takumi and Forme and compatible with shadcn/ui. It addresses PDF generation pain with zero config and live previews.
Open Higgsfield Studio
Open Higgsfield is a free, open-source studio for generating images and videos from a single prompt bar, supporting 38 models without a subscription. It offers self-hosting and BYO keys as an alternative to Higgsfield AI.
Walgit Git Wallpaper
Walgit is a single-binary Git server that stores repositories directly in S3 or GCS with no database or persistent local state. It scales to repositories larger than the machine it runs on by treating every node as a disposable cache.
Morphicons Icon Morphing
Morphicons is a zero-dependency, ~7 KB library that lets any stroke-based icon morph into any other using spring physics and automatic rotation from Procrustes math. It is novel for UI developers needing lightweight, universal icon animation.
Talivia Revenue Analytics
Talivia is a self-hosted, revenue-first analytics platform for founders, combining web analytics, session replay, and revenue attribution from Stripe, LemonSqueezy, and others. It offers an open-source alternative to closed analytics tools.
Web & Frontend
Deco Visual CMS
Git-based visual CMS for Deno, htmx, and Tailwind applications. Offers server-side JSX, local development tunnels, and content editor UI generation from TypeScript props.
Webhook.site Testing Tool
Tool that provides instant unique URLs for testing and debugging webhooks and HTTP requests. Includes a graphical editor and scripting language for transforming and processing requests.
Tick Stock Panel
Self-hosted quant workbench for A-share stock selection, monitoring, and backtesting. Supports multi-source data routing, minute-level strategies, and an AI assistant.
Hilla Business Framework
Framework integrating Spring Boot Java backends with reactive TypeScript frontends. Provides type-safe server communication and UI components, eliminating REST boilerplate.
webapp.rs Rust Framework
Example web application written entirely in Rust using Leptos/WASM, Axum, and SQLx. Demonstrates fullstack Rust integration with server-side rendering and RPC.
KVision Web Framework
Object-oriented Kotlin/JS web framework for building web apps without HTML, CSS, or JavaScript. Provides GUI components, reactive and imperative programming, and fullstack support.
Jetpack Rspack Runner
Preconfigured Rspack-based build tool for web code. Offers zero-config dev server, production builds, hot reloading, and differential builds as a webpack alternative.