01Open source
Repos
Open-source repos worth knowing, by the problem they take on.
AI & Agents
AutoHarness
Builds a self-learning skill layer for Claude Code that distills, updates, and prunes skills from real sessions to improve performance.
iPhone Use
Enables Codex to control physical iPhones via USB using WebDriverAgent for app automation with real-time screen display and screenshot fallback.
Intent-Router
Compiles vague agent requests into typed IntentSpec contracts that probe, ask, or halt before routing to ensure inputs are unambiguous.
rea
Reverse engineers software from app behavior down to native binaries using AI agents to trace functionality to the binary level.
LiteLLM
Routes 100+ LLM APIs through one OpenAI-format gateway with cost tracking, guardrails, and load balancing to simplify multi-provider integration.
Dev Tools & CLI
Terrascope
Renders an interactive Braille terminal world map with live weather, aircraft, earthquakes and day/night layers using curses.
LeftOpen
Shows which processes and projects are listening on localhost ports from the menu bar or CLI so developers can close leftovers safely.
Pulse
Compiles VHDL through a full lexer-to-elaborator pipeline into a four-valued dataflow logic simulation that can be debugged.
Finance & Quant
FinanceHarness
An autonomous financial research framework that gathers evidence, performs valuation and risk calculations.
openctp
Provides CTPAPI-compatible interfaces for multiple Chinese brokerage trading gateways and a 24/7 simulation environment covering futures, A-shares, funds.
TradingChart
Native SwiftUI trading charts for iOS featuring candlesticks, technical indicators, crosshairs, drawing tools.
northstar
An open-source quantitative trading platform supporting strategy research, historical replay, and automated trading for futures, stocks, forex, and crypto.
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An AI-native desktop workbench for A-share market analysis that aggregates sources, structures themes and sentiment data.
Mobile
Omarchy Apple Dev
This Python project builds and deploys iOS apps from Omarchy Linux without Xcode, and developers look at it to run SwiftUI code on physical iPhones using Linux.
perfetto
Perfetto is a C++ suite for tracing and profiling complex systems, and developers look at it as the production-grade default system for Android and Chromium.
T3 Code
T3 Code is a TypeScript control surface for AI agents on your machine via mobile, web, and Electron apps, worth viewing to manage your local Claude.
Mural
Mural is a native TypeScript iPhone and Android app for learning languages through conversation, useful to examine for its implementation using OpenAI.
Backburner
Backburner is a Python tool that uses a USB-C cable to help a Mac run a 27B model with an iPhone, allowing faster prompt reading and more context.
Privacy
Ghostline
Ghostline is a Go-based Windows app that encrypts DNS traffic and bypasses DPI via zapret2 or GoodbyeDPI.
Crest
Crest is a Swift open source browser for Mac, iPhone, and iPad that separates work, home, research, and private browsing into isolated Spaces.
Hushfacebook
HushFacebook is a Java Morphe patch bundle for Android that removes ads and suggested posts from Facebook 581.0.0.45.58 while adding video saving.
starling
Starling is a JavaScript end-to-end encrypted location-sharing service with no accounts or tracking, now available on Android via F-Droid.
Robotics
GazeVLA
Official CoRL 2026 code for a Python framework that learns human intention to improve robotic manipulation through explicit causal behavior modeling.
GRABETTE
A Python toolkit for collecting robot manipulation demonstrations via camera and IMU streams to export training-ready datasets for policy learning.
OpenWAM
A Stanford Python framework for composable world-action models that developers can use to unify causal video pretraining and robot dynamics evaluation.
ros2_pulse
This C++ ROS 2 probe measures topic frequency and node liveness with near-zero overhead for diagnosing communication in live robotic graphs.
SO-ARM 102
This open-source hardware kit provides a 5-DOF leader-follower robot arm design with CAD files and assembly guides for building teleoperation systems.
Science & Simulation
diffsol
Solves ordinary differential equations and semi-explicit differential algebraic equations, helping developers model systems defined in Rust or a DSL.
ruptures
Provides offline change point detection with parametric and non-parametric models so developers can segment non-stationary signals.
regionmask
Creates masks identifying which geospatial region each grid point belongs to, helping developers aggregate climate data over countries or continents.
McCode
Maintains the McStas and McXtrace codes, so developers simulating neutron or x-ray instruments can trace particle behavior.
SCIRun
Rebuilds a visual environment for scientific modeling and simulation so developers can build workflows, though the beta version may be unstable.
Systems & Languages
TS Rust
An experimental Rust port of the TypeScript 7 compiler (tsc)
compiler
Provides the open-source EDG C and C++ front end plus C and C++ generating back ends, useful for building highly compatible compiler products.
TensorFold
Serves language models from a single Zig binary on Apple Silicon and NVIDIA GPUs using Metal or CUDA kernels without Python or MLX.
Beef
Offers an open-source compiled language with C#-like syntax and C-level control, built with its IDE for a smooth high-performance workflow.
Roundhouse
Compiles Rails applications into standalone Rust, Swift, TypeScript, or other targets, letting developers choose deployment as a build flag.
Trending Overall
BitChord
A modern YouTube Music client with clean aesthetics, offering developers a Kotlin-based alternative with features like Hi-Res lossless audio and crossfade.
DroidDeck
A Kotlin project that brings the SteamOS experience to Android, enabling developers to run Steam client and Windows games on Adreno handhelds.
OpenDots
An open-source template for building persistent AI agents that operate across text, calls, and Slack, useful for developers creating always-on AI coworkers.