Javascript database for traditional SQL queries. Smaller and faster alternative to sql.js

This repository is to write program the famous Fibonacci series in as many different programming languages as we can.

A Python framework for modular, self-contained skill management for machines.

A curated directory of developer podcasts for software engineering teams. It is an open-source collection of podcasts that covers system architecture, cloud-native, DevOps, B2B SaaS, AI/ML, and engineering leadership.

A Node.js boilerplate for quickly building and deploying web applications, ideal for hackathons, startups, and early-stage prototypes.

A toolkit for .NET projects

A react todo component created using matirail ui

qtop (pronounced queue-top) is a tool written in order to monitor the state of Queueing Systems, along with related information relevant on HPC & grid clusters. At present it supports **PBS, SGE & OAR** families but it is designed to be extendible.

Production-Grade Container Scheduling and Management

Windows Forms also provides one of the most productive ways to create desktop applications based on the visual designer provided in Visual Studio. It enables drag-and-drop of visual controls and other similar functionality that make it easy to build desktop applications.

Keyboards for language learners with translation, verb conjugation and more!

Open source Slack-alternative in Golang and React

Repo-native coding-agent loop harness for Claude, Codex, Copilot, and other CLI agents. Agents can edit; gates decide what lands.

The .NET Compiler Platform ("Roslyn") provides open-source C# and Visual Basic compilers with rich code analysis APIs.

open source, low-latency, high quality voice chat software primarily intended for use while gaming

This repo helps developers who wants to build portfolio by taking inspiration from already deployed Portfolios. For those who already built, Showcase your Awesome Portfolio to the world.

C++ implementation of OpenTelemetry, a working name of a combined OpenCensus and OpenTracing project. It provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

OpenVINO™ is an open-source toolkit for optimizing and deploying AI inference.

Free SVG icons for popular brands.

.NET is a cross-platform runtime and libraries for cloud, IoT, and desktop apps.

A faster Python type checker and language server written in Rust

Free, open-source AWS certification practice exams (CLF-C02 and AIF-C01) with explained answers, timed mock exams, and domain practice. No signup, no ads, MIT licensed.

A daily-updated community curated directory of developer events taking place all over the world. It covers SaaS, DevOps, and AI events with dates, location, and registration links.

A .NET port of the popular Java/Scala Akka Toolkit.

DevDisplay is the First Global Platform for Developers to Fulfill All Their Tech Needs. A paradise for developers, where they can Connect ▸ Collab ▸ Code ▸ Create ▸ Conquer — all in one place.

A project designed to help you familiarize yourself with the open source contribution workflow on GitHub, as well as to help you learn the basics of programming in different languages.

A framework for building native apps with React.

PowerShell for every system!

EvalAI is an open source web application that helps researchers, students and data-scientists to create, collaborate and participate in various AI challenges organized round the globe.

Core functionality needed to create .NET projects, that is shared between Visual Studio and the .NET CLI

Local-first Japanese speaking practice app for Korean learners with Expo, FastAPI, and local STT/TTS.

Entity Framework Core is a lightweight and extensible version of the popular Entity Framework data access technology.

High Performance Data Backbone for Robotics and Industrial IoT

JabRef is a reference management software that uses BibTeX and BibLaTeX as its native formats and is therefore typically used for LaTeX. What makes JabRef development special is that two developers will review each pull request to ensure high quality.

Distributed, high-performance SQL database

an open source layer that delivers resilience and manageability to object-storage based data lakes

The OpenTelemetry website and documentation. OpenTelemetry provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

The http://freeCodeCamp.com open source codebase and curriculum. Learn to code and help nonprofits.

A repository of all Dockerfiles in one place to make it easier to find.

Multi-platform 2D and 3D game engine

UI for Apache Kafka is a free, open-source web UI to monitor and manage Apache Kafka clusters

An open source publishing platform for environmental projects.

Kibana lets you visualize your Elasticsearch data and navigate the Elastic Stack so you can do anything from tracking query load to understanding the way requests flow through your apps.

MyFinances is a web application that can help you as an individual, or team manage your finances! It utilizes the django framework for the backend.

Build custom CRUD apps that talk to any API or database. All without HTML or CSS.

An open-source web app to help people hold prosecutors accountable for police brutality. Filter through prosecutors by name, role, state, area. Find resources like contact information & relevant articles.

Storybook is a development environment for UI components. It allows you to browse/develop/test a component library based on React & React-Native.

Meshery enables collaborative design and operation of cloud and cloud native infrastructure. Meshery is an extensible, self-service engineering platform.

Open-source observability for LLMs, based on OpenTelemetry

Linux feed reader for GNOME/GTK

The offline app for universal education

Open-source AI-powered education infrastructure platform for assessment, grading, OCR, analytics, and learning intelligence.

The Microsoft Build Engine (MSBuild) is the build platform for .NET and Visual Studio.

A neo-brutalist React component library built with Tailwind CSS, featuring zero-gap layout logic, automated YIQ contrast calculation, and high structural stability.

Open cloud security platform for AWS, Azure, GCP, Kubernetes, Github, M365 and more. Prowler performs security assessments and compliance checks with hundreds of built-in controls for security frameworks like CIS, NIST 800, NIST CSF, CISA, FedRAMP, PCI-DSS, GDPR, HIPAA, and more.

Reliable components for building language runtimes

(Facebook Open Source) Easy to maintain open source documentation websites that powers website of React Native, Prettier, WarriorJS and Jest

Probably the most modern lightweight distributed farm of Vulnerable Applications built for handling wide range of vulnerabilities across tech stacks.

Deterministic orchestrator for 30+ CLI AI coding agents (Claude Code, Codex, Aider, Cursor, Goose, etc.). Git worktree isolation, HMAC audit trail, MCP server mode.

A real-time visualisation of the Greenhouse Gas (in terms of CO2 equivalent) footprint of electricity consumption.

An ORM for node.js supporting PostgresQL, MySQL, sqlite and MSSQL

The OpenTelemetry .NET Contrib project. OpenTelemetry provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

Ptera Software is a fast, easy-to-use, and open-source software package for analyzing flapping-wing flight.

Proof-of-Antiquity blockchain with hardware attestation - rewards vintage hardware miners (PowerPC G4/G5, POWER8) with RTC tokens

Browser add-on allowing you to quickly generate a QR code offline with the URL of the open tab or other text!

CLI-agnostic AI job-search automation - pipeline tracking, offer evaluation, CV generation, and zero-token job scanning

A lightweight, local-only Chrome extension that reduces common third-party website tracking by blocking known tracker requests, cleaning tracking links, and explaining tracking attempts.

icalendar parser library for Python

Python implementation of OpenTelemetry, a working name of a combined OpenCensus and OpenTracing project. It provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

A JNA-based (native) Operating System and Hardware Information library for Java

wger is a free, open source flutter application that manages and tracks/logs your exercises and personal workouts, weight and diet plans.

Manage localization of all ResX-Based resources in one central place

Kubernetes Operator for OpenTelemetry Collector. OpenTelemetry provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

Open Standard for Metadata. A Single place to Discover, Collaborate and Get your data right.

Computer Science Topics

An open-source, nonprofit activism network

Sandstorm is a self-hostable web productivity suite. It's implemented as a security-hardened web app package manager.

Security-first, self-hosted AI agents with container isolation you can prove, not just promise. Runs untrusted agent code in hardened sandboxes. Written in Go.

Theia is a cloud & desktop IDE framework implemented in TypeScript.

Web based translation tool with tight version control integration.

Production-Grade Container Storage for KUbernetes

Fast, disk space efficient package manager

A retro RPG themed expense tracker for managing income, expenses, savings, and recurring finances

Bitwarden is the easiest and safest way to store all of your logins and passwords while conveniently keeping them synced between all of your devices. This repository houses all Bitwarden client applications except the Mobile application.

A Collectible Card Game inspired by Triple Triad

JavaScript library for mobile-friendly interactive maps

The Solidity Contract-Oriented Programming Language

Self-hosted iOS & Android simulator streaming so the whole team can test mobile apps directly from a browser, using the Mac you already own with no external cloud.

The OpenTelemetry Python Contrib project. OpenTelemetry provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

Organizing the information that matters to you and your teams. The knowledge of your world.

The strictest and most opinionated python linter ever!

TypeScript/Vite frontend template with a built-in gated autonomous agent loop.

A Java-based Smart City application for managing users and places. Beginner-friendly issues available.

Offline-first sync engine in Rust for clinics in low-connectivity environments (2G, power outages). Built on an encrypted write-ahead log, version vectors, hybrid logical clocks, and mTLS. Under 10 MB RAM on Raspberry Pi 3.

The compiler for writing next generation JavaScript.

Litmus is a toolset to do cloud-native chaos engineering

A declarative, efficient, and flexible JavaScript library for building user interfaces.

Consul - Open Government and E-Participation Web Software Edit

Contrib repository for the OpenTelemetry Collector. OpenTelemetry provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

The OpenTelemetry Java Contrib project. OpenTelemetry provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

Web-based XMPP/Jabber chat client written in JavaScript

Help improve the PowerShell extension for Visual Studio Code!

.NET implementation of OpenTelemetry, a working name of a combined OpenCensus and OpenTracing project. It provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

Symfony is a PHP framework for web applications and a set of reusable PHP components. Symfony is used by thousands of web applications and most of the popular PHP projects.

ODK Collect is an Android app for filling out forms. It's been used to collect millions of data points in challenging environments around the world. Contribute and make the world a better place!

OpenTelemetry auto-instrumentation and instrumentation libraries for Java. OpenTelemetry is a working name of a combined OpenCensus and OpenTracing project. It provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

Grade exams fast and accurately using a scanner 🖨 or your phone 🤳.

A community-curated collection of simplified and example-driven man pages.

Client libraries for Sentry, an error reporting and performance monitoring platform, for usage from .NET and popular application frameworks

This repo contains the curriculum of Techtonica, a tech training program for women and non-binary adults with low incomes.

The Visual F# compiler and tools

Governed shared memory for AI agent fleets — multi-agent, multi-tenant, MCP-native. Trust tiers, keystone policies, audit trails, knowledge graph, self-improving retrieval. Apache 2.0.

Demonstration of different algorithms and operations on faces.

A Python package to assess and improve fairness of machine learning models.

The parallel browser engine project

NLog - Flexible and high performance logging framework for the .NET platforms

Specification of OpenTelemetry, a working name of a combined OpenCensus and OpenTracing project. It provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

The Wikimedia Commons Android app allows users to upload pictures from their Android phone/tablet to Wikimedia Commons. Initially started by the Wikimedia Foundation, this app is now maintained by volunteers.

Fast and minimalist 3D viewer

A cross-platform, open source, and super fast MUD client with scripting in Lua

Java implementation of OpenTelemetry, a working name of a combined OpenCensus and OpenTracing project. It provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

A Vulnerable Web Application for DAST developers, Students and DAST consumers.

An open source marketing automation platform.

WPF is a .NET Core UI framework for building Windows desktop applications.

Open-source Python toolkit for water data, hydrology, and agricultural water management. Unifies 15 global water-data sources behind one schema, with Bulletin 17C flood frequency, baseflow separation, FAO-56 crop water requirements, and an AI methodology recommender. Issues are scoped with clear acceptance criteria and a first-issue to second-issue to area-owner contributor ladder.

Claude Code agent coordination skill for multi-agent task orchestration

A curated, community-driven list of the best tech, software engineering, and developer marketing newsletters. Stay up-to-date with top-tier insights across AI, DevOps, Frontend, and more.

Header-Only C++ Library for Graph Representation and Algorithms

A lightweight but powerful source code editor which runs on your desktop and is available for Windows, macOS and Linux.

A free, open source, community-focused unit testing tool for the .NET Framework.

Official TypeScript SDK for the Kakunin AI Agent KYC platform — issues X.509 certificates to AI agents, verifies scopes, and enforces them via drop-in middleware.

Android application used to capture geotagged images of trees for ecosystem restoration projects.

Matomo is the leading open alternative to Google Analytics that gives you full control over your data.

An epic, browser-based roguelite survival game built with React, Vite, and HTML5 Canvas.

Jupyter’s Next-Generation Notebook Interface.

.NET nanoFramework is a free and open-source platform that enables the writing of C# code applications for constrained embedded devices like ARM Cortex-M0/M4/M7, ESP32, TI CC3220, NXP and other microcontrollers.

Interactive learning platform using Python and Javascript with AngularJS

ASP.NET Core is a cross-platform .NET for building modern web applications on Windows, Mac, or Linux.

phpMyAdmin Bringing MySQL to the web

🦀 An open source payments switch to make Payments fast, reliable, and affordable.

Kontent.ai Content Management .NET SDK

Community bounty board for RustChain ecosystem - earn RTC tokens for contributions

Learn production backend engineering through runnable failure cases with broken code, failing tests, fixes, and production notes.

A free, fast and beautiful API request builder.

An open source plasma physics package in Python

Self-hosted control plane to deploy, monitor, and operate OpenClaw and Hermes AI agents on Docker or Kubernetes.

The comprehensive CMS for small to medium sized businesses and non-profits.

Realtime collaborative markdown notes

Dependency security scanner for AI coding agents — scans vulnerabilities, licenses, typosquats in your project.

MIT registry and CLI for installing wired Payload CMS blocks into Payload v3 and Next.js projects.

FreshRSS is a self-hosted RSS and Atom feed aggregator. It is lightweight, easy to work with, powerful, and customizable.

PyTorch is an open source machine learning library based, used for applications such as computer vision and NLP.

PHP implementation of OpenTelemetry, a working name of a combined OpenCensus and OpenTracing project. It provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

Orchestration and automation platform to execute millions of scheduled and event-driven workflows declaratively in code and from the UI

A cross-platform UI framework for .NET

The OWASP Cheat Sheet Series was created to provide a concise collection of high value information on specific application security topics.

A systems programming language focused on safety, speed, and concurrency.

A beautiful Git repository visualizer useful for teaching Git

A peer-run open-source network where developers earn verifiable reputation through contributions, peer reviews, and on-chain attestations.

Collector for OpenTelemetry, a working name of a combined OpenCensus and OpenTracing project. It provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

An F# Type Provider to interop with R

A programming assignment submission system

Core formulae for the Homebrew package manager

Open-source alert management and workflow automation platform.

Self-hosted website uptime monitor with real-time analytics, interactive charts & anti-sleep engine. No UptimeRobot needed.

An open-source AI-powered learning platform with intelligent tutoring, adaptive assessments, and personalized study tools. Full-stack application with NestJS backend, React frontend, and Flutter mobile app.

Documentation for .NET

BuildCLI is a command-line interface (CLI) tool for managing and automating common tasks in Java project development.

Shogun is a unified and efficient machine learning library. We support multiple languages and platforms, have an efficient core in C++ and a great community.

Realtime secret and configuration management tool, with the best in class security and seamless integration support

Your self-hosted live video streaming and chat server.

Img2Num is a cross-platform library that converts raster images such as PNG and JPEG into clean, layered SVG paths. It is designed for high performance with WebGPU acceleration, minimal dependencies, cross-platform support, and bindings for multiple programming languages.

TypeScript is a superset of JavaScript that compiles to clean JavaScript. It adds static typing and next-level ECMAScript features to JavaScript.

A web-based tool to visualize popular sorting algorithms with animations, built using React and Material-UI.

Free, multilingual bereavement compliance checklist for families in Europe. Open-source data and web service.

A GitHub bot to automate repeatedly tasks

Give your AI agent a real browser. MCP server + Chrome extension for task-level browser automation.

Design, Test and Document APIs in plain Markdown. Compose Requests with API blocks. Reuse, Replace & Version everything just like code. Offline, Truly Git Native, No Lock-in.

A FOSS, offline first personal diary application written in Flutter

An opensource identity and access management platform as an alternative to Auth0

A community-driven python bot that aims to be as simple as possible to serve humans with their everyday tasks

An interface-centric real-time communication engine to connect Things at the edge of the network and develop distribute embedded applications.

A collaborative online office suite based on LibreOffice technology

🎥✨ A TikTok live streaming recorder tool written in Python. Capture and relive your favorite TikTok moments effortlessly. 🎥✨

The OpenTelemetry JavaScript Contrib project. OpenTelemetry provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

A fast line-by-line code for computing high-resolution infrared molecular spectra

A safe home for all your data. Access & share your files, calendars, contacts, mail & more from any device, on your terms.

An open source, cloud-native programming language optimized for integration.

Content curation tools for Kolibri Learning Platform (the offline app for universal education)

OpenWrt packages composing LibreMesh meta-firmware for wireless mesh networking

The fastest way to browse and search for videos on your computer

Brighter is a CQRS framework for .NET supporting in-process and out-of-process command handlers using task queues

The Guake drop-down terminal

A simple and fast CDN written in Go meant for beginner programmers to learn about docker and CDNs

.NET Aspire is an opinionated, cloud ready stack for building observable, production ready, distributed applications in .NET

Generation of diagram and flowchart from text in a similar manner as markdown

Saleor is a high-performance, GraphQL-first e-commerce solution created with Python and Django. https://getsaleor.com/

Keyboards for language learners with translation, verb conjugation and more!

chroot, mount --bind, and binfmt_misc without privilege/setup for Linux

A search-engine for openly-licensed media, part of the WordPress project

ClickHouse is a fast open-source OLAP database management system

A beginner-friendly open source learning lab with a DevOps glossary that helps newcomers make their first real open source contribution.

A Claude-Tag-style context-selection layer for the Hermes agent framework: @-mention it in a Feishu/Lark or Slack group and it replies in-thread from bounded per-chat memory.

A high-performance full-stack application that analyzes your music listening history using offline PyTorch Machine Learning and the Gemini API to visualize your auditory emotional journey.

AuthPass is a cross platform password manager for desktop and mobile (Android, iOS) based on flutter. It uses the Keepass 2 file format (kdbx) and provides native builds for all major platforms (Android, iOS, iPadOS, MacOS, Windows, Linux).

JavaScript implementation of OpenTelemetry, a working name of a combined OpenCensus and OpenTracing project. It provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools.

scikit-learn models hyperparameters tuning, using evolutionary algorithms.

Isolated React component development environment with a living style guide

A safe home for all your data