open-source
Hegel is a universal property-based testing protocol and family of libraries, built on Hypothesis.
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Render markdown into email-safe HTML. Responsive Emails, Written in Markdown. Write markdown. Ship emails. No HTMHELL.
Email.md converts markdown into responsive, email-safe HTML that works across Gmail, Outlook, Apple Mail, Yahoo, and every other client.
Architecture in. Software out. Spec-Driven Code Generation.
An open-source framework that turns architectural specs into working code. You write a specification, optionally lay out the architecture, and Ossature breaks it down into a build plan that gets executed step by step with an LLM doing the code generation under tight constraints. The specs are your source of truth, you review the plan before anything gets built, and when something breaks you fix that step and keep going instead of starting over.
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A command-line interface the simplifies interaction with Kafka.
Manage & view data inside your Apache Kafka ® cluster
Kafka GUI for Apache Kafka ® to manage topics, topics data, consumers group, schema registry, connect and more...
Get the main content of any page as Markdown.
Defuddle extracts the main content from web pages. It cleans up web pages by removing clutter like comments, sidebars, headers, footers, and other non-essential elements, leaving only the primary content.
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RE# - A high-performance, automata based regex engine with first-class support for intersection and complement operations.
RE# compiles patterns into deterministic automata. All matching is non-backtracking with guaranteed linear-time execution. RE# extends System.Text.RegularExpressions syntax with intersection (&), complement (~), and a universal wildcard (_), enabling patterns that are impossible or impractical to express with standard regex.
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Property-based testing for web UIs, autonomously exploring and validating correctness properties, finding harder bugs earlier.
Runs in your local developer environment, in CI, and inside Antithesis.
Elephantshark helps monitor, understand and troubleshoot Postgres network traffic: Postgres clients, drivers and ORMs talking to Postgres servers, proxies and poolers (also: standby servers talking to their primaries and subscriber servers talking to their publishers).
Elephantshark sits between the two parties in a PostgreSQL-protocol exchange, forwarding messages in both directions while parsing and logging them.
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The first UI framework for the agentic era — tiny, performant, with WASM sandboxes for safe code execution.
A tiny, blazing-fast, zero dependency, type-safe framework with no build step required.
ArrowJS ships with the ability to isolate component logic inside Web Assembly sandboxes while rendering full inline DOM directly in your app — no iframes, no pre-defined UI components.
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Object-store native databases built on a common foundation. Simple to operate. Impossible to outgrow.
OpenData is a collection of open source databases built on a common, object-native storage and infrastructure foundation. This shared foundation means every database has a virtually identical operational profile, which makes our database fleet materially easier and cheaper to operate than alternatives.
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An open standard for shared agent learning. Agents persist, share, and query collective knowledge so they stop rediscovering the same failures independently.
cq is derived from colloquy (/ˈkɒl.ə.kwi/), a structured exchange of ideas where understanding emerges through dialogue rather than one-way output. It reflects a focus on reciprocal knowledge sharing; systems that improve through participation, not passive use. In radio, CQ is a general call ("any station, respond"), capturing the same model: open invitation, response, and collective signal built through interaction.
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The configuration framework for Zsh.
Prezto is the configuration framework for Zsh; it enriches the command line interface environment with sane defaults, aliases, functions, auto completion, and prompt themes.
Scrapy, a fast high-level web crawling & scraping framework for Python.
The open source toolbox for resilient operations.
Rebound is a set of tools, ranging from a network injection fault proxy to a reliability automation platform, so people can rely on you being there when they need.
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Automate your web typography workflow with this Composer dev-tool. 🚀
Converts TTF fonts to optimized WOFF2 subsets using Python FontTools. Works with Laravel, Symfony, and vanilla PHP projects.
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Converts PNG/JPG images to AVIF, WebP and JPG in multiple sizes. Automate your web image workflow with this Composer dev-tool. 🚀 .
Works with Laravel, Symfony, and vanilla PHP projects.
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Light, fluffy, and always free - AWS Local Emulator.
Floci is a fast, free, and open-source local AWS service emulator built for developers who need reliable AWS services in development and CI without cost, complexity, or vendor lock-in.
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Your library, your server. Self-Hosted E-Book Library.
HomeBranch is a self-hosted E-Book library with a beautiful in-browser reader, cross-device reading position sync, bookshelves, and multi-user support. No subscriptions. No cloud. Full control.
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calibre is a powerful and easy to use e-book manager. Users say it’s outstanding and a must-have. It’ll allow you to do nearly everything and it takes things a step beyond normal e-book software. It’s also completely free and open source and great for both casual users and computer experts.
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Multi-LLM orchestration plugin for Claude Code — 8 providers (Codex, Gemini, Claude, Perplexity, OpenRouter, Copilot, Qwen, Ollama), 47 commands, 50 skills, Double Diamond workflows .
Multi-LLM orchestration plugin for Claude Code — coordinates Codex, Gemini, Perplexity, OpenRouter, Copilot, Qwen, and Ollama with consensus gates. Eight tentacles, zero blind spots.
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Bring the Real World into Minecraft.
Transform any location on Earth into a playable Minecraft world. Free, open source, and easy to use.
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Requests is an elegant and simple HTTP library for Python, built for human beings.
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Agentic review of Linux Kernel code changes.
Sashiko is an agentic Linux kernel code review system. It uses a set Linux kernel-specific prompts and a special protocol to review proposed Linux kernel changes. Sashiko can ingest patches from mailing lists or local git. It's fully self contained (doesn't use any external agentic cli tools) and can work with various LLM providers.
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Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety and depth to it. Still, it is easy to get started through playable tutorials.
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A static recompiler for original GameBoy ROMs that translates Z80 assembly directly into portable, modern C code.
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Logitech Mouse Remapper.
A lightweight, open-source, fully local alternative to Logitech Options+ for remapping Logitech HID++ mice.
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Free Open Source Drone Log Analysis and backup tool- Own Your Drone Data.
Free, open-source drone flight log analyzer for DJI and Litchi. Analyze telemetry, replay 3D flights, track battery health with privacy-first local storage. Desktop & Docker available.
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A macOS app that blurs your screen when you slouch.
Dorso monitors your posture in real-time using either your Mac's camera or AirPods motion sensors. When it detects that you're slouching, it progressively blurs your screen to remind you to sit up straight. Maintain good posture, and the blur clears instantly.
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Store, organize and index scanned documents in PDF, JPEG and TIFF formats. Instantly find relevant information using full text, tags and metadata based search.
Quick, painless, intuitive OCR platform written in Rust and TypeScript. Modern UI with modern API, with an emphasis on intuitive user experience.
Readur is a powerful and modern document management system designed to help individuals and teams efficiently organize, process, and access their digital documents. It combines a high-performance backend with a sleek and intuitive web interface to deliver a smooth and reliable user experience.
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Unofficial Python API and agentic skill for Google NotebookLM. Full programmatic access to NotebookLM's features—including capabilities the web UI doesn't expose—via Python, CLI, and AI agents like Claude Code, Codex, and OpenClaw.
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Terminal Multiplexer for Windows.
The ultimate tmux alternative for Windows Terminal, PowerShell, and cmd.exe. Native Windows support with zero dependencies.
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IPED Digital Forensic Tool is an open source software that can be used to process and analyze digital evidence, often seized at crime scenes by law enforcement or in a corporate investigation by private examiners.
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TUI Application to manage Obsidian notes directly from the terminal .
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Control your De'Longhi coffee machine from your terminal, browser, or any automation. BLE-to-HTTP bridge for ECAM machines.
An open-source BLE-to-HTTP bridge that turns your De'Longhi ECAM coffee machine into a fully automatable, API-driven appliance.
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Composting Mobile Phones - Hosting server on obsolete mobile phones.
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agent-sandbox enables easy management of isolated, stateful, singleton workloads, ideal for use cases like AI agent runtimes.
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Common Expression Language. Fast, safe expression language
Common Expression Language (CEL) is an expression language that’s fast, portable, and safe to execute in performance-critical applications. CEL is designed to be embedded in an application, with application-specific extensions, and is ideal for extending declarative configurations that your applications might already use.
Use CEL for things like list filters for API calls, validation constraints on protocol buffers, and authorization rules for API requests.
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ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files. It's widely used to build languages, tools, and frameworks. From a grammar, ANTLR generates a parser that can build and walk parse trees.
A self-hosted, database-less note taking web app that utilises a flat folder of markdown files for storage.
Node for Offline Media, Archives, and Data.
Project N.O.M.A.D, is a self-contained, offline survival computer packed with critical tools, knowledge, and AI to keep you informed and empowered—anytime, anywhere.
A rich git commit graph in your terminal, like magic 📚
Serie (/zéːriə/) is a TUI application that uses the terminal emulators' image display protocol to render commit graphs like git log --graph --all.
pertmux ([ru]-pert multiplexer) - unified SWE Dash. Your MRs. Your worktrees. Your agents. One dashboard.
A Rust TUI that links GitLab/GitHub merge requests to local branches, tmux sessions, and AI coding agents — one place for everything.
pertmux ([ru]-pert multiplexer) is a unified SWE dashboard that links GitLab/GitHub MRs to local branches/worktrees, tmux sessions, and coding agent instances. It provides a real-time view of merge request status, pipeline health, worktree management, and session progress — all from a single TUI.
Nord Stream is a tool that allows you to extract secrets stored inside CI/CD environments by deploying malicious pipelines. It currently supports Azure DevOps, GitHub and GitLab.
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A multi-platform CI/CD vulnerability detection and attack automation tool for identifying security weaknesses in pipeline configurations.
Trajan scans CI/CD pipelines for security vulnerabilities that attackers use to compromise software supply chains. It supports GitHub Actions, GitLab CI, Azure DevOps, Jenkins, and JFrog.
Serena is a powerful coding agent toolkit capable of turning an LLM into a fully-featured agent that works directly on your codebase. Unlike most other tools, it is not tied to an LLM, framework or an interface, making it easy to use it in a variety of ways.
Serena provides essential semantic code retrieval and editing tools that are akin to an IDE’s capabilities, extracting code entities at the symbol level and exploiting relational structure. When combined with an existing coding agent, these tools greatly enhance (token) efficiency.
Serena is free & open-source, enhancing the capabilities of LLMs you already have access to free of charge.
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The universal messaging standard.
XMPP is the Extensible Messaging and Presence Protocol, a set of open technologies for instant messaging, presence, multi-party chat, voice and video calls, collaboration, lightweight middleware, content syndication, and generalized routing of XML data.
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Session manager and task runner for tmux. Start your development environment within one command.
Smug automates your tmux workflow. You can create a single configuration file, and Smug will create all the required windows and panes from it.
Your own intelligence terminal. 27 sources. One command. Zero cloud. Intelligence Terminal. Your personal intelligence agent. Watches the world from multiple data sources and pings you when something changes.
Stealth Chromium for Browser Automation. Stealth Chromium that passes every bot detection test.
Not a patched config. Not a JS injection. A real Chromium binary with fingerprints modified at the C++ source level. Antibot systems score it as a normal browser — because it is a normal browser.
Open-source app for incredible screen recordings. Create polished product demo videos effortlessly.
Recordly is an open-source screen recorder that adds auto-zoom, smooth cursor animations and more to your videos. Expect bugs.
stylish CSV tables in your terminal.
tennis is a small CLI for printing stylish CSV tables in your terminal. Rows will be truncated to fit and it'll automatically pick nice colors to match your terminal. Written in Zig. Demo:
Named .localhost URLs for Development. Replace port numbers with stable, named local URLs. For humans and agents.
Portless replaces port numbers with stable, named .localhost URLs for local development. For humans and agents.
p5.js is a friendly tool for learning to code and make art. It is a free and open-source JavaScript library built by an inclusive, nurturing community. p5.js welcomes artists, designers, beginners, educators, and anyone else!
p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code and express themselves creatively on the web. It is based on the core principles of Processing.
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Petal is a native macOS menu bar app for fast, local-first audio transcription.
Karaoke from your music library. Machine learning powered Karaoke app (with scores!) .
Turn any song into karaoke. A self-contained party game that separates vocals, transcribes lyrics, and plays it all back with word-level sync and pitch scoring.
OpenShell is the safe, private runtime for autonomous AI agents.
NVIDIA OpenShell is the safe, private runtime for autonomous AI agents. It provides sandboxed execution environments that protect your data, credentials, and infrastructure. Agents run with exactly the permissions they need and nothing more, governed by declarative policies that prevent unauthorized file access, data exfiltration, and uncontrolled network activity.
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pgtui is a Postgres TUI client that handles basic CRUD operations on databases.
There are two main windows in the app, one with the available relations in the selected database and the other with the data of those relations. You can easily scroll through both, filter relations by type or name, sort the data by columns, or filter the data via a where clause entered into a dialog box.
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Easy self-hosting for Docker-based web apps.
ONCE is a platform for installing and managing Docker-based web applications. Its goal is to make self-hosting applications as simple as possible.
As well as simplifying the initial setup, ONCE also provides automatic updates, backups, and system information. It has a TUI interface with a dashboard for monitoring and operating your applications, as well as CLI commands for common operations should you (or your AI agent) prefer that.
ONCE runs on Linux and macOS, and can be used to run applications on a variety of hardware: a physical server, a cloud VPS, a Raspberry Pi, or your laptop, are all suitable.
ONCE comes with a set of 37signals apps built-in, but you can use it to install any compatible Docker image as well.