01Open source
Repos
Open-source repos worth knowing, by the problem they take on.
Data & Databases
Chroma AI Search
Chroma is an AI-focused search infrastructure offering vector, hybrid, and full-text search through a four-function API and a hosted serverless cloud service. It is notable for its Rust-based purpose-built vector database design and strong momentum in AI infrastructure.
SeaORM Rust ORM
SeaORM is a relational ORM for Rust that models complex relationships and provides filters, pagination, and nested queries for building APIs. It is notable for filling a gap in the Rust ecosystem with async support and production-ready usage at 250k+ weekly downloads.
MikroORM TypeScript ORM
MikroORM is a TypeScript ORM for Node.js based on Data Mapper, Unit of Work, and Identity Map patterns, supporting major SQL and MongoDB databases. It is notable for its well-architected pattern implementation, suitable for complex applications.
Databasus Backup Tool
Databasus is a PostgreSQL backup tool providing physical, logical, and WAL streaming backups with point-in-time recovery and restore verification. It is notable as a practical DevOps tool designed for disaster recovery and near-zero data loss.
ToyDB Distributed SQL
toyDB is an educational distributed SQL database written in Rust, featuring Raft consensus, ACID transactions, and a pluggable storage engine. It is notable for making complex database internals simple and understandable for learning.
Apache CouchDB
Apache CouchDB is a database with an intuitive HTTP/JSON API and a seamless multi-primary synchronization model, designed for reliability. It is notable for its unique sync architecture and continued active maintenance.
SpiceDB Authorization Database
SpiceDB is an open-source database for storing and querying fine-grained authorization data, inspired by Google's Zanzibar system. It is notable for setting a standard for scalable authorization, addressing broken access control, a top web security threat.
Dev Tools & CLI
Tincan CLI
A serverless peer-to-peer voice and text chat CLI for terminals. Notable for using Iroh to create rooms without servers, VPNs, or accounts, making it useful for remote developers.
Issue Graph
A CLI that traces linked GitHub issues and pull requests to find related work before starting. Notable for helping with triage and agent workflows, backed by Vercel Labs.
Suiko Japanese Diagnostics
A Rust CLI for deterministic diagnostics of Japanese text naturalness and readability. Notable for its reproducible, local-only analysis with embedded dictionaries, useful for non-native writers.
Runyte Workspace
A modal text editor combined with terminals, files, and Git in a single terminal workspace. Notable as an ambitious TUI aiming to unify development tools in one persistent session.
Bast SSH Manager
A terminal tool for browsing SSH hosts, syncing cloud VMs, managing keys, and connecting via SFTP. Notable as a fast, fresh alternative to Termius for cloud-heavy developers.
k10s Kubernetes TUI
A clickable Kubernetes TUI with instant search, logs, exec, port-forwarding, themes, and context-aware AI. Notable as a practical, feature-rich alternative to k9s, distributed as a single Go binary.
GhostHub Terminal
A Ghostty-native terminal multiplexer for local and remote tmux, Herdr, and Zellij sessions with Git worktree management. Notable for integrating multiple multiplexers across SSH hosts in one interface.
Game Dev
FlyBrain Boss
A video game boss controlled by a real-time biophysical simulation of a fruit fly's brain connectome (~165k neurons). Uses a deterministic Rust engine and Python vectorized environments.
Obliberry Game Engine
A Fallout-inspired isometric game engine for hex-grid games, written in C++20 with OpenGL. Includes a visual editor, ECS core, custom scripting language, and single-file project packaging.
Onity Unity Package
A Unity package providing dependency injection, reactive programming, events, and async tasks in one framework. Engine-free core with allocation-free hot paths and IL2CPP validation.
Image to 3DLab
Local-first tool to convert a single image or text into a textured, game-ready 3D model on Apple Silicon or NVIDIA machines. Includes retopology, repaint, rigging helpers, and license provenance.
SDL Painter
A modern C++17 2D drawing library built on SDL3 with dual OpenGL/Vulkan backends. Adds high-level drawing features like thick-line geometry, adaptive tessellation, transforms, and batching.
Rollback Core
Deterministic GGPO-style rollback netcode plugin for Unreal Engine 5. Provides fixed-step simulation, state capture, and UDP transport with input redundancy and reliable ACKs.
Overtime Coding Agent
An autonomous coding agent framework that lets you give a brief instead of a chat. Includes an example of building an open-world city in a real game engine without human help.
Robotics
Cadence Learning System
Cadence is a brain-inspired AI framework that learns continuously from live experience, combining perception, memory, plasticity, and action. It models a simulated human-like brain from simplified biological mechanisms rather than using feed-forward deep neural networks.
Metriplane Robotics Observability
Metriplane provides deterministic replay and verifiable incident evidence for recorded robotics workcell runs. It generates human-readable reports and regression tests from timestamped object positions and process rules, enabling engineers to rerun cases after software changes.
RL Token Pipeline
RL-Token-Pi05-open provides a pipeline for fine-tuning the ฯ0.5 VLA, training an RL Token, and deploying online reinforcement learning on the SO-101 robot arm. It includes a critical-phase classifier and step-by-step hardware, recording, training, and inference workflows.
FLUX Action Model
FLUX 3 Action is an open-weights 7B world action model from Black Forest Labs. It takes camera frames, robot state, and text instructions to predict actions and future video frames for robots, simulators, and games.
Science & Simulation
OpenMOLE Workflow Engine
OpenMOLE is a free and open-source workflow engine for running, exploring, diagnosing, and optimizing numerical models on distributed computing environments. It supports models in any language and focuses on parameter exploration and high-throughput simulation studies.
Security
OpenAPPA Guardrails
OpenAPPA is a deterministic guardrail layer that sits between an AI agent and its tools to enforce permission policies on data flows. It is notable for using a formal policy algebra (APPA) to make agent permissions auditable, though validation is still early.
Moria IoT Identification
Moria is a tool for identifying and extracting filesystems, kernels, and other structures embedded in IoT firmware without root privileges. It is notable for its recursive unpacking of many filesystem types and clean JSON output designed for scripting and LLM agents.
Mithril IoT Scanner
mithril is a static scanner for IoT firmware contents that detects secrets, builds SBOMs, finds CVEs, checks licenses, and assesses boot-security posture. It is notable for reporting evidence and confidence per finding and for its JSON-first design aimed at both humans and LLM agents.
Lagune Security Copilot
Lagune is a security copilot that points an AI agent at a codebase to guide developers and auditors through relevant security work without requiring an API key. It is notable for supporting 73 agents and any programming language, though it remains early-stage with low traction.
PCYBox Attack Graph
pcybox-attackgraph is a browser-based lab for building simulated infrastructure and observing attack paths, with explanations of why each step succeeds and which defensive controls would break it. It is notable as an educational and threat-modeling tool that runs entirely in the browser.
Strypt Metadata Remover
strypt is an offline Rust desktop and CLI tool that removes metadata such as GPS coordinates, serial numbers, author names, and timestamps from photos, PDFs, Office documents, audio, and video. It is notable for its memory-safe implementation and strict no-network code paths.
Synapse CE Control
Synapse CE is a governed control plane for the security assessment lifecycle, covering SCA, SAST, secrets scanning, recon, cloud posture, and blue-team agents. It is notable for combining server-side scope enforcement, tamper-evident evidence, and deterministic reporting into a single auditable workflow.
Web & Frontend
GoatDB P2P Database
GoatDB is an embedded, distributed, peer-to-peer document database for realtime state sharing across humans, agents, tools, and devices. It is notable for its TypeScript-first design, React hooks, and verifiable state continuity.
Amaze File Manager
AmazeFileManager is an open-source Android file manager with a Material Design interface and features like tabbed browsing, root explorer, and AES encryption. It is notable for being lightweight and supporting cloud services and app management.
AI Whiteboard Animator
cs-board is a local AI workbench that generates whiteboard animation videos from reference audio and Chinese text. It is notable for integrating voice cloning, illustration, animation, subtitles, and export into one offline tool.
Pinme Frontend Deployment
PinMe is a zero-config CLI for creating and deploying full-stack projects with frontend, Worker backend, and database in one command. It is notable for supporting Claude Code Skills and simplifying full-stack delivery.
Pegasus Game Frontend
Pegasus is a cross-platform graphical frontend for browsing game libraries and launching emulators from one place. It stands out for customizability, high performance, and support for embedded devices.
Angular Example App
angular-example-app is a beginner-friendly, production-ready Angular 21 starter demonstrating CRUD, authentication, i18n, lazy loading, and signals. It is notable as a real-world learning reference for modern Angular best practices.
Watermark JS Plus
watermark-js-plus is a lightweight, framework-agnostic browser watermark library supporting text, image, rich-text, and blind watermarks. It is notable for tamper protection, decoding, and working across vanilla JavaScript and frontend frameworks.