01Open source
Repos
Open-source repos worth knowing, by the problem they take on.
AI & Agents
Fauxnix Bash Translator
A deterministic bash-to-PowerShell translation layer built for AI agents that runs natively on Windows without WSL or VMs. It converts Linux-style commands with GNU-style output and error handling, solving agent-UX pain for Windows-based development.
Coucou Notch Companion
A Mac notch companion and iPhone app that monitors AI coding agents like Claude Code and Codex, allowing permission approvals from the Lock Screen or Dynamic Island. It provides a cross-device interface for watching agent sessions and approving permissions without leaving your current context.
OpenMausBot
An open-source Grok Bot alternative that runs teams of AI bots locally, each with its own virtual machine, personality, and connected apps. Users interact with them like contacts in a chat interface while approving their actions.
Geo Sleuth Skill
An agent skill that geolocates photos using OpenStreetMap geometry, elevation skylines, and satellite imagery, then shows its reasoning and evidence. It works across Claude Code, Codex, Cursor, Gemini CLI, and GitHub Copilot to identify locations without text or landmarks.
Data & Databases
WatermelonDB React Database
WatermelonDB is a reactive, offline-first database for React and React Native apps that stays fast with tens of thousands of records. It uses lazy loading and observables to optimize client-side persistence across mobile and web platforms.
Adminer PHP Database
Adminer is a full-featured database management tool distributed as a single PHP file ready to deploy. It supports MySQL, PostgreSQL, SQLite, MS SQL, and other databases with a lightweight footprint.
Apache IoTDB
Apache IoTDB is a time-series database purpose-built for IoT workloads with a high-performance storage engine. It is an Apache top-level project specializing in efficient ingestion and management of massive device-generated data.
Quivr Content Engine
Quivr is an open-source engine that ingests continuous content streams, makes them searchable within seconds, and supports topic monitoring with alerts. It features durable ingestion, hybrid search, and a plugin system for formats, models, and business rules.
Goose Database Migrations
Goose is a database migration tool for Go that manages schema changes via SQL scripts or Go functions, working as both CLI and library. It supports multiple databases including Postgres, MySQL, and Spanner.
Ibis Python Dataframe
Ibis is a portable Python dataframe library that lets users compose lazy expressions (using DuckDB by default) and run them unchanged across 20+ database backends. It enables local iteration and remote deployment by changing a single line of code.
Flyway Database Migrations
Flyway is a database migration tool by Redgate supporting versioned schema changes across 50+ database systems. It is an industry-standard Java-based solution with broad enterprise adoption.
Dev Tools & CLI
Pared Apple Intelligence Cleaner
A tool that selectively removes unwanted Apple Intelligence models on macOS without disabling SIP, via a native app, CLI, nix-darwin, and Home Manager. It also underpins RemoveMacAI, which credits it for the hard reverse-engineering work.
Plannotator Terminal Markdown Annotations
A terminal Markdown annotator for selecting text and leaving comment, looks-good, or delete marks, then handing the numbered review to a coding agent. A single static Rust binary aimed at the current wave of agent-assisted code review workflows.
Tsuzuri Terminal Notebook
A block-based notebook for the terminal that stores notes as plain Markdown and offers Vim-style editing, live preview, boards, calendars, and 96 themes. A single-binary install for macOS, Linux, and Windows makes it an unusually full-featured TUI note-taking option.
Dopbase DevOps Secrets Manager
An open-source, self-hosted secrets manager packaged as a single file containing the server, Admin UI, REST API, and CLI, storing data in SQLite. A practical, still-maintained option for small DevOps teams wanting to keep secrets on their own infrastructure.
RemoveMacAI macOS Debloater
A native macOS app and CLI to disable Apple Intelligence, delete its models, and silence analytics, ads, pop-ups, and background updaters, with every change previewable and reversible. It builds on pared's reverse-engineering and drew press coverage, though its star growth looks inflated.
Terrahour Terminal World Clock
A terminal world clock that renders a braille-dot day/night world map plus a 24-hour per-city timeline for planning meetings across zones. It includes DST handling and time scrubbing, and is a polished, fresh single-tool TUI.
PuppetLoom
A Windows desktop app, deterministic CLI, and project format that turns layered PSD character art into rigged, animated desktop puppets, with agents driving revisions through a public CLI. It builds on the See-Through layer-decomposition research and never fabricates missing poses.
Embedded & Hardware
Hermes Gadget SDK
An ESP32 SDK to build voice and text devices that connect to your own Hermes Agent, including firmware, a Linux client, and a desktop simulator. Notable for making agent hardware accessible via browser-based installation and offering a low-code path to add custom sensors and behaviors.
Project Cascadia
Ports mainline Linux 6.12 to Apple iPad mini 1 hardware using the checkm8 exploit to boot XFCE with touchscreen support. The first public effort to run upstream Linux on Apple's locked A5 silicon.
Ivan Bohun Website
A personal website hosted across six ESP32 microcontrollers without cloud or CDN infrastructure. The blades elect a virtual-MAC leader for TCP load balancing and failover, demonstrating sophisticated distributed systems design on minimal hardware.
Capicola DSP Firmware
Real-time DSP firmware for the Hermetic Modular Alchemy Lab that performs time stretching, pitch shifting, transient detection, and envelope following. It implements a peer-reviewed DAFx26 algorithm and targets hands-on audio experimentation on embedded hardware.
PHP on ESP32
Runs a native PHP 8.3–8.5 interpreter on ESP32 microcontrollers, executing scripts directly from microSD without emulation. A rare bare-metal language runtime that remains actively maintained with a public roadmap.
TinyDesk
A windowed desktop environment for microcontrollers rendered entirely within a terminal, supporting ESP32 boards as well as Windows and Linux hosts. Combines a file manager, editor, and industrial protocols like MQTT and Modbus in a unique TUI interface.
Edge Agents Runtime
A 30 MB runtime for deploying offline AI agents on Linux edge devices like Raspberry Pi and Jetson, with native integration for GPIO, UART, and MQTT protocols. Designed for industrial and IoT use cases where cloud independence is required.
Finance & Quant
KunQuant Compiler
KunQuant is a compiler and executor that transforms financial factor expressions into optimized code, originally built for Alpha101 and Alpha158. Notable for its specialized optimization approach including AVX512 support, it targets quant researchers needing efficient batch factor computation.
Program Garden
ProgramGarden is a no-code node-based platform for building automated trading strategies, supporting Korean stocks and overseas futures via LS Securities. The AGPL-licensed project targets retail algorithmic traders in Korean markets.
Intro to Quant
Introduction-to-Quantitative-Finance is a Chinese open-source knowledge base combining multi-factor investment frameworks, AI+finance paper tracking, and curated learning resources. It serves students and researchers seeking structured quantitative finance education with academic depth.
Libitofin
libitofin is a Rust port of QuantLib offering pricing, risk, and numerical methods with Python and Go bindings. It provides a memory-safe, high-performance alternative to the C++ original, though APIs remain unstable pre-1.0.
Privacy
Snitch
Snitch is a Python real-time network traffic visualizer that shows every connection your computer makes, which app is responsible.
Security
VulnHunter
VulnHunter is an Apache-2.0 AI security scanner maintained as a harness-portable fork of Capital One's tool and used to prove vulnerabilities with sandboxed
action-dist-verify
action-dist-verify is an MIT-licensed TypeScript utility that rebuilds a pinned action's dist from source and diffs the committed artifact
Witness Vault
Witness Vault is an MIT-licensed Python tool that packages secrets into a self-decrypting offline HTML vault with AES-256-GCM WebCrypto
Hot Cell
HotCell is an MIT-licensed Ruby sidecar for Rails apps to run untrusted code on untrusted inputs in an unprivileged container
Persistent Browser-In-The-Middle
P-BitM is a GPL-3.0 Python platform for controlled browser-in-the-middle security assessments with an admin dashboard, isolated browsers, session viewing
Web & Frontend
Beam
A tiny, teachable WebGPU library that exposes the real WebGPU API through five nouns and two verbs with first-class TypeScript types.
Viewi
A front-end framework that compiles PHP components into reactive browser apps, worth exploring if you want to build interactive web UIs without leaving PHP.
hairline
A dependency-free ESM library that renders isometric line figures responding to pointer movement, usable with React or any DOM-based app.
Quickdraw
An MIT-licensed infinite-canvas whiteboard SDK that embeds a complete drawing surface into React, React Native.
Coi
A type-safe, component-based language that compiles to WebAssembly for building reactive web apps.