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AddDeploy Docker Apps on Your Infrastructure.
A lightweight tool for deploying and managing containerised applications across a network of Docker hosts. Bridging the gap between Docker and Kubernetes ✨
Open Source Airtable Alternative & Backend as a Service. 🚀 Private first self-hosted no code database & BaaS.
UNDB is a no-code platform that can also serve as a Backend as a Service (BaaS). It is based on SQLite and can be packaged into a binary file using Bun for backend service. Additionally, it can be deployed as a service via Docker, offering a UI for table management.
Actionable test coverage checks for Ruby and Github.
Find missing tests instantly.
undercover warns about methods, classes and blocks that were changed without tests, to help you easily find untested code and reduce the number of bugs. It does so by analysing data from git diffs, code structure and SimpleCov coverage reports.
php dev tools in your browser.
Clockwork is a development tool for PHP available right in your browser. Clockwork gives you an insight into your application runtime - including request data, performance metrics, log entries, database queries, cache queries, redis commands, dispatched events, queued jobs, rendered views and more - for HTTP requests, commands, queue jobs and tests.
Your new desktop awaits. 🚀 Web-based Dynamic Desktop Engine. The open-source HTML dynamic desktop engine for Windows 10 & 11.
Create and share web-based interactive, animated wallpapers on Windows 🚀 Available on the Microsoft Store
Other tools show you a hairball. We teach you the codebase. Graphs that teach the codebase.
Graphs that teach > graphs that impress. Turn any code, or knowledge base (Karpathy LLM wiki), into an interactive knowledge graph you can explore, search, and ask questions about. Works with Claude Code, Codex, Cursor, Copilot, Gemini CLI, and more.
Watch once. Then take the stage. A Teachable Desktop Agent.
Understudy is a teachable desktop agent. It operates your computer like a human colleague across GUI, browser, shell, files, and messaging. You demonstrate a task once, it learns the intent, remembers successful paths, and gradually upgrades to faster execution routes.
PowerShell Training for the People.
Under the Wire trains experienced, developing, and novice Information Technologists to use Windows PowerShell in a variety of situations through innovative and fun wargames.
Collection of free design tools and resources for makers, developers and designers
Open source illustrations for any idea.
Open-source illustrations for any idea you can imagine and create. A constantly updated design project with beautiful SVG images that you can use completely free and without attribution.
Remove YouTube Recommended Videos and More.
Watch YouTube free of distractions. Block suggestion feeds, comments, and more.
The Universal Code Beautifier.
Single beautifier abstracting multiple beautifiers for multiple languages.
unified is a collective of 500+ free and open source packages that work with content as structured data (ASTs). Different kinds of content can be connected together. Particularly, markdown, natural language, HTML, XML, and JavaScript are frequently used.
Content as structured data.
We compile content to syntax trees and syntax trees to content. We also provide hundreds of packages to work on the trees in between. You can build on the unified collective to make all kinds of interesting things.
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True Serverless. The fast, secure and open-source Unikernel Development Kit.
Unikraft powers the next-generation of cloud native, containerless applications by enabling you to radically customize and build custom OS/kernels; unlocking best-in-class performance, security primitives and efficiency savings.
A next-generation cloud native kernel designed to unlock best-in-class performance, security primitives and efficiency savings.
Log-Native, Real-Time Database for AI and Edge Computing. A streaming multimodal database for Edge AI, and Edge Computing.
UnisonDB is an open-source database designed specifically for Edge AI and Edge Computing . It is a reactive, log-native and multi-model database built for real-time and edge-scale applications. UnisonDB combines a B+Tree storage engine with WAL-based (Write-Ahead Logging ) streaming replication, enabling near-instant fan-out replication across hundreds of nodes — all while preserving strong consistency and durability.
Next Generation Visual Programming System.
Unit is a General Purpose Visual Programming Language and Environment built with a primary focus on Developer Experience.
It is heavily inspired by Live, Data Flow, Reactive, Functional and Object Oriented Programming paradigms. Formally, units are Multi Input Multi Output (MIMO) Finite State Machines (FSM). A program in Unit is represented as a Graph.
Universal Web App Server.
NGINX Unit is a lightweight and versatile application runtime that provides the essential components for your web application as a single open-source server: running application code (including WebAssembly), serving static assets, handling TLS and request routing.
Universal tools for Expo & Next to solve fragmented APIs of Link, Image, Font & Router.
Unitools is a group of tooling that aims to simplify the process of code sharing between Next.js, Expo, and React Native projects. It's a required and indispensable tool in the realm of cross-platform development today with more and more apps moving towards universal app development. Unitools provides a unified API for handling images, links, and route navigation hooks across all these platforms.
3D, 2D, VR & AR Engine.
Create and grow amazing games across 20+ platforms and billions of devices with our end-to-end tools and services for creation, launch, and beyond.
Beautiful. Efficient. Elegant.
Unity is a desktop platform, based on technologies such as Nux, GTK and Compiz. With its beautiful design, efficient and elegant workflow, you'll be able to work with an unparalleled level of efficiency.
Open SourceOffice Suite of the Next Generation. Extensible. High-performance. Embedded to your application.
Univer is an open-source alternative to Google Sheets, Slides, and Docs.
The Universal Blue project builds a diverse set of continuously delivered operating system images using Fedora Atomic Desktop's support for OCI/Docker containers. That's nerdspeak for the ultimate Linux client: the reliability of a Chromebook, but with the flexibility and power of a traditional Linux desktop.
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Universal design methods for more inclusive solutions. Supporting the development of inclusive innovations
Unified JavaScript Tools.
Unleash JavaScript's Potential with the UnJS Ecosystem Agnostic Excellence: JavaScript Libraries, Tools, and Utilities, Crafted to Elevate Your Coding Journey.
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Tell people your code is open source, but not actively maintained. Add a shiny badge to your project.
The open source to-do application for bookmarks.
An open source, bookmarking service created by Colin Devroe and rebuilt by Plain.
A modular data visualization framework for React, Angular, Svelte, and vanilla TypeScript or JavaScript
Automated Archive Extractions.
Extracts downloads for Radarr, Sonarr, Lidarr, Readarr, and/or a Watch folder - Deletes extracted files after import
Unpackerr runs as a daemon on your download host or seedbox. It checks for completed downloads and extracts them so Lidarr, Radarr, Readarr, and Sonarr may import them. If your problem is rar files getting stuck in your activity queue, then this is your solution.
Search Evasion Techniques.
Malware authors spend a great deal of time and effort to develop complex code to perform malicious actions against a target system. It is crucial for malware to remain undetected and avoid sandbox analysis, antiviruses or malware analysts. With this kind of techniques, malware are able to pass under the radar and stay undetected on a system. The goal of this free database is to centralize the information about malware evasion techniques.
This project aims to provide Malware Analysts and Defenders with actionable insights and detection capabilities to shorten their response times.
Unleash Your Hardware. Unraid OS allows sophisticated media aficionados, gamers, and other intensive data-users to have ultimate control over their data, media, applications, and desktops, using just about any combination of hardware.
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Manage Your Browsing Activity Across Devices.
Sync and manage all your bookmarks and browsing history from multiple browsers in one place, without the limitations of the sync solutions offered by major browsers.
Unsearch is an open-source, cross-browser manager for browsing activity.
Finetune AI & LLMs faster. Web UI for training and running open models like Gemma 4, Qwen3.6, DeepSeek, gpt-oss locally.
Unslow AI training & finetuning Get 30x faster with unsloth. 5X faster 60% less memory QLoRA finetuning. Finetune Mistral, Gemma, Llama 2-5x faster with 70% less memory!
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Tools for better thinking.
Collection of thinking tools and frameworks to help you solve problems, make decisions and understand systems.
Submin provides a web-based admin interface to your svn repositories.
2D+3D game making for indies. Free and open source, finally.
A Process Control System. Supervisor is a client/server system that allows its users to monitor and control a number of processes on UNIX-like operating systems.
It shares some of the same goals of programs like launchd, daemontools, and runit. Unlike some of these programs, it is not meant to be run as a substitute for init as “process id 1”. Instead it is meant to be used to control processes related to a project or a customer, and is meant to start like any other program at boot time.
Sleek, modular open source JavaScript file uploader
Uppy is a sleek, modular JavaScript file uploader that integrates seamlessly with any application. It’s fast, has a comprehensible API and lets you worry about more important problems than building a file uploader.
Uppy fetches files locally and from remote places like Dropbox or Instagram. With its seamless integration, reliability and ease of use, Uppy is truly your best friend in file uploading.
Nested is a jQuery plugin which allows you to create multi-column, dynamic grid layouts. Unlike other libraries and jQuery plugins similar to Nested, this is (as far I as I’ve know) the first script out there that allows you a complete gap-free layout. How is this done? Nested does three things. It creates a matrix of all elements and creates a multi column grid, similar to other libraries and scripts out there. Then it scans the maxtric for gaps and tries to fill them by reordering the elements. This is exactly how I’ve seen other newer libraries, scripts and modifications behave but if you stop here, the result will sometime leave unwanted gaps as well. That is why I added the last step, an option to resize any element at the bottom of the grid that is bigger (or smaller if you prefer) than the gap to make the grid completely gap-free.
Open source – Greek cubesat. UPSat is a 2U Cubesat format satellite constructed by University of Patras and Libre Space Foundation part of the QB50 mission with ID GR-02.
Free and Open Source AI Image Upscaler for Linux, MacOS and Windows built with Linux-First philosophy.
AI Image Upscaler.
#1 Free and Open Source AI Image Upscaler for Linux, MacOS and Windows.
A fancy self-hosted monitoring tool. Uptime Kuma is an easy-to-use self-hosted monitoring tool.
Simple and modern email sending library
Universal interface for emailing across runtimes.
Upyo is a simple and cross-runtime library for sending email messages using SMTP and various email providers. It works on Node.js, Deno, Bun, and edge functions.
Donnons des yeux à nos héros du quotidien. La visio qui révolutionne la prise en charge téléphonique.
Urgentime se démarque par sa conception axée sur la relation client et les urgences. Contrairement à WhatsApp, notre solution offre une transition instantanée de l’appel téléphonique à la visio, sans nécessité de téléchargement d’application.
Suricata is a high performance Network IDS, IPS and Network Security Monitoring engine. Open Source and owned by a community run non-profit foundation, the Open Information Security Foundation (OISF). Suricata is developed by the OISF and its supporting vendors.
Privacy-First Android Keyboard.
Privacy-focused Android keyboard with swipe typing, custom layouts, and password manager support. No tracking, 100% on-device, and fully open source.
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Fast development platform for business apps.
4D is an incredibly productive development platform that lets you focus on your data model and your business rules. The 4D framework takes care of running your application code natively on macOS and Windows.
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A micro-animations library.
Animated icons in Lottie Framework for immediate implementation to your apps or websites.
Autumn is an open-source pricing & billing platform.
The most simple and flexible way to setup payments
Open-source infra above Stripe that manages permissions, usage limits and payment flows. Setup your pricing plans in minutes and never touch billing again.
Run Windows in a Bottle. Run Windows software and games on Linux.
Easily run Windows software on Linux with Bottles!
Simple, privacy-focused website analytics. Built with Golang & Preact. Fathom Lite is a previous and open-source version of Fathom Analytics (a paid, hosted Google Analytics alternative). It was the very first version of our software, and has been downloaded millions of times! While we are no longer adding features to this Lite version, we will be continuing to maintain it long-term and fix any bugs that come up.
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Sound effects for the interface, performed live.
Foley is a tiny, dependency-free library of 28 interaction sounds, synthesized live with Web Audio the instant you interact — no audio files, no setup. When the defaults aren’t yours, redesign them and ship a sound set: your product’s sonic identity in one small JSON file.
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Track AI Code all the way to production
An open-source Git extension for tracking AI code through the entire SDLC. Once installed, it automatically links every AI-written line to the agent, model, and transcripts that generated it — so you never lose the intent, requirements, and architecture decisions behind your code.
Authorization service and frontend for Docker registry (v2)
Structure LLM Outputs with Ease. Structured outputs powered by LLMs.
The simplest way to extract structured data from LLMs with type safety and validation.
Get reliable JSON from any LLM. Built on Pydantic for validation, type safety, and IDE support.
A lightweight, self-hosted memo hub. Open Source and Free forever. memos provides the privacy, security, and reliability that innovators need in their moments of inspiration.
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