01Open source
Repos
Open-source repos worth knowing, by the problem they take on.
AI & Agents
GoLive Skill CLI
Open-source Agent Skill and zero-dependency Node CLI for deploying agent-built products. Notable for detecting needs, planning changes, and applying them on your own accounts without telemetry or a backend.
Itsaplan Project Management
Self-hosted project management and issue tracking alternative to Linear and Plane. Notable for treating AI agents as teammates with full REST API, webhook, and MCP access.
SGLang Course
Official SGLang and Datawhale course on LLM inference, teaching concepts through building a mini-sglang and reading SGLang source. Notable for hands-on learning aimed at inference engineers, with English and Chinese versions.
AI Agent Memory
Git-native persistent memory for AI coding agents implementing Google OKF v0.2 in pure Go. Notable for sub-300µs BM25 search and 80% token reduction without external databases.
NeoHorse Self Improvement
TokenRhythm's open-weight model family for agent workflows, including 4B and 9B models for tool use and coding. Notable for exploring recursive self-improvement via agentic post-training with a routing harness.
Graftcode Development Layer
Integration-free development framework for calling methods across languages and runtimes as local dependencies. Notable for eliminating SDKs and client code, aiming to replace integration layers entirely.
Doop Design Canvas
Open-source multiplayer design canvas where humans and AI agents edit together live. Notable for streaming agent edits via MCP and rendering real HTML in sandboxed iframes.
Crypto & Web3
CryptTrace OSINT Toolkit
Crypttrace is an OSINT toolkit that traces crypto fund flows across Ethereum, Bitcoin, Tron, and Solana, labeling known entities and scoring risk. It is notable for its practical multi-chain forensics workflow and local interactive fund-flow graphs.
MetaMask Desktop
MetaMask Desktop is a cross-platform desktop app for managing a cryptocurrency wallet and interacting with Web3 apps. It is notable as the official desktop alternative to MetaMask's browser extension, offering improved stability and system integration.
Finance & Quant
Polymarket Trading Bot
A retired Python bot that market-made and arbitraged Polymarket sports markets by de-vigging sportsbook odds and hedging. Notable for its real on-chain trading history, finishing about $5k net on a public wallet.
Intraday Stock Scanner
A real-time intraday stock scanner for US equities that streams 1-minute bars and displays configurable alerts in a customizable browser dashboard. Notable for running locally with user-provided Alpaca or Schwab data, with no subscription or telemetry.
Options Gamma Dashboard
An open-source, self-hosted options analytics dashboard tracking dealer gamma exposure, max pain, open interest, and IV surfaces. Notable for storing historical snapshots, enabling analysis that live-chain-only tools cannot provide.
Chan Python Framework
An open-source Python framework implementing Chan theory for Chinese market technical analysis, supporting morphology and dynamics buy/sell point calculation across multiple timeframes. Notable for its practical scope and active development among Chinese traders.
A-Share Quant Framework
A collection of Chinese A-share quantitative tools including the free Ashare market data API, a free tushare token, and a MiniQMT plus XtQuant local trading framework. Notable for providing a low-cost, privacy-focused path to real-money automated trading for individual A-share investors.
AI Trading Assistant
A self-hosted AI market monitoring assistant for A-shares, HK, and US stocks that integrates the TradingAgents multi-agent framework for portfolio analysis and decision reports. Notable for combining real-time monitoring, holdings management, and multi-channel alerts with AI-driven investment reasoning.
AI Investment Studio
An open-source, AI-native trading analysis and automation system where users compose visual workflows for market signal analysis and portfolio actions. Notable for its workflow-based approach to building custom AI trading systems with approval and broker integration, though still early-stage.
Mobile
Harkinian Pad
A native iOS/iPadOS port of Ocarina of Time via the Ship of Harkinian source port, using Metal rendering and touch controls. It is notable for bringing a full PC source port to Apple mobile platforms without requiring a jailbreak.
Mugshot Screenshot Testing
A screenshot testing library for Compose Multiplatform and Android previews that turns annotated @Preview functions into tests. It runs on the JVM without an emulator, reducing boilerplate and making visual regression checks part of unit testing.
DSH Mobile APK
An Android APK shell for DeepSeek Harness that combines a WebView UI with an embedded Termux runtime snapshot. It is notable for providing a one-install way to run a web agent with real bash execution on-device without requiring the Termux app.
Overlay Translator
An open-source Android app that translates on-screen text in games, visual novels, and manga by capturing the screen, running OCR, and overlaying translations. It is notable for working without root and supporting on-device OCR and offline LLMs.
DDC Decompiler
A Rust-based decompiler that converts Android DEX bytecode back into readable Java at scale. It is notable for its speed, processing large APKs in seconds, and for producing output that javac can verify.
Jev Chat Jarvis
A mobile dialogue copilot for Chinese chat apps like QQ, X, and Feishu that reads on-screen conversations, suggests replies, and fills the input box. It is notable for its non-invasive accessibility-service approach and early momentum among Chinese users.
Always Strong
A single-flash Magisk/KernelSU/APatch module that bundles TEESimulator-RS and PlayIntegrityFork to achieve Strong Play Integrity on rooted Android devices. It is notable for simplifying an otherwise manual, multi-module setup for device attestation bypass.
Privacy
Nulltrace Privacy Toolkit
Nulltrace is a local-first privacy toolkit that maps personal data against 400+ brokers, queues CCPA/GDPR deletion requests, and checks for password breaches. It is notable for keeping all data on the user's machine without requiring an account.
Science & Simulation
Feel++ Library
C++ finite element embedded language and library for solving partial differential equations. Notable for its high-performance computing and multiphysics capabilities aimed at advanced numerical simulation.
Russell Scientific Library
Rust scientific library providing ODE, DAE, and PDE solvers, special functions, linear algebra, sparse solvers, probability distributions, and tensor analysis. Notable for its breadth of numerical tools in Rust.
JAXNS Sampling
Probabilistic programming framework using nested sampling as the inference engine, implemented in JAX. The entire algorithm lowers to XLA primitives and JIT-compiles for high performance in scientific machine learning.
Runmat Engine
Open source math and physics engine executing MATLAB-syntax code with a Rust-based compiler and automatic GPU acceleration. Notable for its modern runtime and support for geometry and FEA calculations.
Natural Disaster Simulation
Fully procedural ocean and extreme weather simulation running in a browser with GPU-generated waves, clouds, and storms in about 400 KB of JavaScript and GLSL. Notable for its zero external assets and real-time cinematic GPU techniques.
PyMFEM Wrapper
Python wrapper for the MFEM high-performance parallel finite element method library. It enables using MFEM from Python, including pip installation and optional MPI support.
Felupe Infrastructure
Python finite element infrastructure for nonlinear computational solid mechanics built on NumPy and SciPy. Notable for its high-level API and interactive meshes and fields using PyVista.
Systems & Languages
Selfie Systems Toolchain
Selfie is an educational system that includes a self-compiling C compiler, a self-executing RISC-V emulator, and a self-hosting RISC-V hypervisor. It is notable for teaching systems engineering through self-reference in a unified undergraduate and graduate project.
Grain Compiler Toolchain
Grain is a programming language that compiles to WebAssembly via Binaryen, providing a modern toolchain and CLI. It targets systems-relevant web applications, with an active development community and a guided learning path.
Trending Overall
Laya Decision Engine
A non-autoregressive System 1 decision engine for typed choice, score, and yes/no decisions over any text in 100+ languages in a single forward pass. It uses RLCD training and a router to select the right checkpoint per request.
FluxDown Download Manager
FluxDown is a Rust-based multi-protocol download manager supporting HTTP, FTP, BitTorrent, and HLS/DASH streaming with browser integration. It is notable for its IDM-style dynamic segmentation and up to 10x faster downloads, free and open-source.
Kev Decision Models
A family of small Jev-like decision models built on Qwen3.5/3.8 that users can train and run themselves. Its API matches TypeSafe's System One, enabling yes/no, multiple-choice, and rating questions in a single request.
XERJ AI Search
XERJ is a local AI search tool that autoindexes code, docs, logs, and PDFs for agents and RAG. It is notable for using 40x fewer tokens than grep and being Elasticsearch-compatible, reducing coding agent output tokens by 2.7x in a controlled study.
Ultrafast Web Agent
jev-ultrafast is a browser agent that uses a dynamic, indexed action space to execute web tasks with minimal text generation. It is notable for being positioned as the fastest and cheapest web agent, demonstrated by completing a flight search in 7.1 seconds.
Evidence Based Life Guide
An evidence-based life guide in Chinese sorted by cost-effectiveness, covering longevity, first aid, finance, legal issues, employment, insurance, relationships, and entrepreneurship. It includes 612 recommendations with cost, benefit, evidence level, and sources from journals and official documents.
SemIf OpenJev
SemIf-OpenJev provides semantic decision-making from open models that runs on a 3090 GPU at home. It is notable for being an independent, open implementation with a browser demo and no waitlist, replicating Jev-like functionality.