Lean Algorithmic Trading Engine by QuantConnect (Python, C#)

Volta: JS Toolchains as Code. ⚡

a typescript framework meant to performance test anything even remotely rest-like

CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.

The Atomic Game Engine is a multi-platform 2D and 3D engine with a consistent API in C++, C#, JavaScript, and TypeScript

Self hosted FLOSS fitness/workout, nutrition and weight tracker

AutoFixture is an open source library for .NET designed to minimize the 'Arrange' phase of your unit tests in order to maximize maintainability. Its primary goal is to allow developers to focus on what is being tested rather than how to setup the test scenario, by making it easier to create object graphs containing test data.

The React documentation website

⛓ A Framework for Building High Value Public Blockchains ✨

🐍🎮 pygame (the library) is a Free and Open Source python programming language library for making multimedia applications like games built on top of the excellent SDL library. C, Python, Native, OpenGL.

Interactive Widgets for the Jupyter Notebook

A self-hostable ecommerce application with a focus on developer productivity and ease of customization.

Apollo Universal Starter Kit is a SEO-friendly, fully-configured, modular starter application that helps developers to streamline web, server, and mobile development with cutting-edge technologies and ultimate code reuse.

Beautifier for javascript

Free and Open, Distributed, RESTful Search Engine

The Cloud-Native API Gateway

An Android library for managing images and the memory they use.

Powerful, mature open-source cross-platform game engine for Python and C++, developed by Disney and CMU

A library and website for lighting technology's DMX fixture definition files.

Deduplicating archiver with compression and authenticated encryption.

Kubernetes website and documentation repo:

Cross-platform framework for building truly native mobile apps with Java or Kotlin. Write Once Run Anywhere support for iOS, Android, Desktop & Web.

🐠 Babel is a compiler for writing next generation JavaScript.

.NET API Gateway

Python-based continuous integration testing framework; your pull requests are more than welcome!

An RSS/Atom feed reader for text terminals

Algorithms and Data Structures of all kinds written in Rust.

Slide is an open-source, ad-free Reddit browser for Android.

Automatically provision and manage TLS certificates in Kubernetes

The core of our monitoring platform with a powerful configuration language and REST API.

💡 A hinting engine for the web

Generative Art Marketplace

Contour is a Kubernetes ingress controller using Envoy proxy.

⚡ Serverless Framework – Use AWS Lambda and other managed cloud services to build apps that auto-scale, cost nothing when idle, and boast radically low maintenance.

A library for easy and efficient manipulation of tensor networks.

Astronomy and astrophysics core library

Open source clone of Theme Hospital

Slack Developer Kit for Node.js

Mopidy is an extensible music server written in Python

The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis

Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with the Extensions for OpenJDK for OpenJ9 repo.

Delightful JavaScript Testing.

Brave browser for Android, iOS, Linux, macOS, Windows.

An open source payments switch written in Rust to make payments fast, reliable and affordable

A frontend Framework for building data-driven applications running on top of REST/GraphQL APIs, using TypeScript, React and Material Design

Clear Eyes. Full Hearts. Can’t Lose.

A TypeScript-like language for WebAssembly.

3d plotting for Python in the Jupyter notebook based on IPython widgets using WebGL

The AWS Cloud Development Kit is a framework for defining cloud infrastructure in code

Simple and Distributed Machine Learning

Yoast SEO for WordPress

EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.

Test infrastructure for the Kubernetes project.

A Git-based CMS for Static Site Generators

Crawlee—A web scraping and browser automation library for Node.js to build reliable crawlers. In JavaScript and TypeScript. Extract data for AI, LLMs, RAG, or GPTs. Download HTML, PDF, JPG, PNG, and other files from websites. Works with Puppeteer, Playwright, Cheerio, JSDOM, and raw HTTP. Both headful and headless mode. With proxy rotation.

python package for manipulating gpx files and easily converting gpx to other different formats

Topic Modelling for Humans

SingularityCE is the Community Edition of Singularity, an open source container platform designed to be simple, fast, and secure.

Minimal implementation of the Mimblewimble protocol.

A BPMN 2.0 rendering toolkit and web modeler.

Streaming music player that finds free music for you

A computer algebra system written in pure Python

Stan development repository. The master branch contains the current release. The develop branch contains the latest stable development. See the Developer Process Wiki for details.

Mailchimp Open Commerce is an API-first, headless commerce platform built using Node.js, React, GraphQL. Deployed via Docker and Kubernetes.

An object oriented PHP driver for FFMpeg binary

Application for managing recipes, planning meals, building shopping lists and much much more!

Easy to maintain open source documentation websites.

Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.

The source code that powers readthedocs.org

A modified web browser that helps in responsive web development. A web developer's must have dev-tool.

Dynamic quote generator for your GitHub readmes | Give a poetic touch to readmes

scikit-learn: machine learning in Python

Transportation planning and traffic simulation software for creating cities friendlier to walking, biking, and public transit

The Cloud Native Control Plane

Carvel provides a set of reliable, single-purpose, composable tools that aid in your application building, configuration, and deployment to Kubernetes. This repo contains information regarding the Carvel open-source community.

Open-source project hosted at https://makeuseofdata.com to crowdsource a robust collection of notes related to data science (math, visualization, modeling, etc)

Content for onestep-electron.github.io

Cron for NodeJS.

Dedicated Game Server Hosting and Scaling for Multiplayer Games on Kubernetes

A free, online learning platform to make quality education accessible for all.

:cake: Cake (C# Make) is a cross platform build automation system.

An open-source JavaScript library for world-class 3D globes and maps :earth_americas:

The best C# command line parser that brings standardized *nix getopt style, for .NET. Includes F# support

Fish shell like syntax highlighting for Zsh.

Application Kernel for Containers

A distributed, fast open-source graph database featuring horizontal scalability and high availability

Layer5, expect more from your infrastructure

Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.

This is an example that how to use Markdown creating a dungeon, please give a ⭐

A cloud-native Pipeline resource.

Fortio load testing library, command line tool, advanced echo server and web UI in go (golang). Allows to specify a set query-per-second load and record latency histograms and other useful stats.

Open-source observability for your LLM application, based on OpenTelemetry

Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more

ZITADEL - Identity infrastructure, simplified for you.

A libre lightweight streaming front-end for Android.

git-cola: The highly caffeinated Git GUI

The Clojure Interactive Development Environment that Rocks for Emacs

Apache Superset is a Data Visualization and Data Exploration Platform

Jenkins X provides automated CI+CD for Kubernetes with Preview Environments on Pull Requests using Cloud Native pipelines from Tekton

Blazing fast, instant realtime GraphQL APIs on your DB with fine grained access control, also trigger webhooks on database events.

A terminal for the web

Graphical application for generating different color variations of Oomox (Numix-based) and Materia (ex-Flat-Plat) themes (GTK2, GTK3, Cinnamon, GNOME, Openbox, Xfwm), Archdroid, Gnome-Color, Numix, Papirus and Suru++ icon themes. Have a hack for HiDPI in gtk2. Its Base16 plugin also allowing a lot of app themes support like Alacritty, Emacs, GTK4, KDE, VIM and many more.

The Block Editor project for WordPress and beyond. Plugin is available from the official repository.

Probabilistic reasoning and statistical analysis in TensorFlow

A highly efficient implementation of Gaussian Processes in PyTorch

Image processing algorithms implementation in pure Python 🔧

A flexible, responsive, touch-friendly carousel for Vue.js

Compiler for Neural Network hardware accelerators

Accept Bitcoin payments. Free, open-source & self-hosted, Bitcoin payment processor.

CockroachDB - the open source, cloud-native distributed SQL database.

Open-Source Phishing Toolkit

A lightning-fast search API that fits effortlessly into your apps, websites, and workflow

Universal select/multiselect/tagging component for Vue.js

Fast math typesetting for the web.

Mono open source ECMA CLI, C# and .NET implementation.

Nodejs bindings to OpenCV 3 and OpenCV 4

A classic inspired shoot em' up game written in Java with JavaFX and FXGL.

Open Source Computer Vision Library

sbt, the interactive build tool

Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, Retrofit, Reactive Streams, Spring Boot and Dropwizard.

SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. 🔥 🖥. 👉 Open source Application Performance Monitoring (APM) & Observability tool

The SpotBugs plugin for security audits of Java web applications and Android applications. (Also work with Kotlin, Groovy and Scala projects)

🔱 A dynamic SQL query builder for MySQL, Postgres and SQLite

Leapp is the DevTool to access your cloud

GlobaLeaks is free, open source software enabling anyone to easily set up and maintain a secure whistleblowing platform.

Event-driven scripting for Kubernetes

Work with remote images registries - retrieving information, images, signing content

Google's Material Design in XAML & WPF, for C# & VB.Net.

:atom: Run code interactively, inspect data, and plot. All the power of Jupyter kernels, inside your favorite text editor.

A simple GUI calculator🧮 built using C++

Learn Rust with examples (Live code editor included)

Open-source live-chat, email support, omni-channel desk. An alternative to Intercom, Zendesk, Salesforce Service Cloud etc. 🔥💬

ArduPlane, ArduCopter, ArduRover, ArduSub source

AWX provides a web-based user interface, REST API, and task engine built on top of Ansible. It is one of the upstream projects for Red Hat Ansible Automation Platform.

The Pants Build System

Annotate better with CVAT, the industry-leading data engine for machine learning. Used and trusted by teams at any scale, for data of any scale.

High-level tracing language for Linux eBPF

A React.js based web-app to find repositories containing 'good first issues' open source contribution. Any kind of contribution and suggestions are highly appreciated!

:star: Vim for Visual Studio Code

Cruise-control is the first of its kind to fully automate the dynamic workload rebalance and self-healing of a Kafka cluster. It provides great value to Kafka users by simplifying the operation of Kafka clusters.

cuML - RAPIDS Machine Learning Library

Command-line control panel for Nginx Server to manage WordPress sites running on Nginx, PHP, MySQL, and Let's Encrypt

Parser Building Toolkit for JavaScript

Mutation testing for .NET core and .NET framework!

A cloud-native vector database, storage for next generation AI applications

Stellarium is a free GPL software which renders realistic skies in real time with OpenGL. It is available for Linux/Unix, Windows and macOS. With Stellarium, you really see what you can see with your eyes, binoculars or a small telescope.

SVG icons for popular brands

The no-magic web data plane API and microservices framework for Python developers, with a focus on reliability, correctness, and performance at scale.

The Kubernetes Package Manager

Fast, disk space efficient package manager

🦔 PostHog provides open-source product analytics, session recording, feature flagging and A/B testing that you can self-host.

Component infrastructure and Material Design components for Angular

🏗 Build container images for your Java applications.

The pluggable natural language linter for text and markdown.

A python interface for interacting with the Ethereum blockchain and ecosystem.

React carousel component

STUMPY is a powerful and scalable Python library for modern time series analysis

Literate scientific computing and communication for the web

An open source re-implementation of RollerCoaster Tycoon 2 🎢

CNCF Jaeger, a Distributed Tracing Platform

sso, aka S.S.Octopus, aka octoboi, is a single sign-on solution for securing internal services

A React component for building Web forms from JSON Schema.

Golang terminal dashboard

Turns Data and AI algorithms into production-ready web applications in no time.

Fetch Standard

UI Grid: an Angular Data Grid

Enterprise-ready, GitOps enabled, CloudNative feature management solution

SnowFS - a fast, scalable version control file storage for graphic files :art:

The AWS Amplify CLI is a toolchain for simplifying serverless web and mobile development.

A Ruby code quality reporter

This is the repo for Vue 2. For Vue 3, go to https://github.com/vuejs/core

Ultralight, security-first service mesh for Kubernetes. Main repo for Linkerd 2.x.

ZIO — A type-safe, composable library for async and concurrent programming in Scala

Open source Firebase + Heroku to develop, scale and secure serverless apps on Kubernetes

GNU Radio – the Free and Open Software Radio Ecosystem

Lightweight, robust, elegant syntax highlighting.

小程序组件化开发框架

📝 Minimalistic Vue-powered static site generator

Lightweight CLI download accelerator

Distributed Workflow Engine for Microservices Orchestration

Composable transformations of Python+NumPy programs: differentiate, vectorize, JIT to GPU/TPU, and more

Continuous Profiling Platform. Debug performance issues down to a single line of code

Allure Report is a flexible, lightweight multi-language test reporting tool. It provides clear graphical reports and allows everyone involved in the development process to extract the maximum of information from the everyday testing process

An open source Vagrant configuration for developing with WordPress

The Ballerina Programming Language

GraphQL server with a focus on ease of use

Powerful .NET library for benchmarking

Home of the Joomla! Content Management System

A Go module datastore and proxy

Dependency Manager for PHP

Universal Radio Hacker: Investigate Wireless Protocols Like A Boss

An open source time-series database for fast ingest and SQL queries

A Chaos Engineering Platform for Kubernetes.

General-purpose web UI for Kubernetes clusters

For empowering community 🌱

Kubernetes based Cloud Development Environments for Enterprise Teams

The AMP web component framework.

🔥 Seata is an easy-to-use, high-performance, open source distributed transaction solution.

A fast, scalable, high performance Gradient Boosting on Decision Trees library, used for ranking, classification, regression and other machine learning tasks for Python, R, Java, C++. Supports computation on CPU and GPU.

Declarative web scraping

A fast and easy-to-use CDN, built with Go.

fast HTTP/1.1 benchmarking tool written in Node.js

Build Mobile, Desktop and WebAssembly apps with C# and XAML. Today. Open source and professionally supported.

Orchestrate end-to-end encryption, cryptographic identities, mutual authentication, and authorization policies between distributed applications – at massive scale.

Open Source Web Application Framework for ASP.NET Core. Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET and the ASP.NET Core platforms. Provides the fundamental infrastructure, production-ready startup templates, application modules, UI themes, tooling, guides and documentation.

⚡️Lightning-fast linter for .env files. Written in Rust 🦀

An active model wrapper for the Neo4j Graph Database for Ruby.

Declarative Django request validation for RESTful APIs

A Ruby static code analyzer and formatter, based on the community Ruby style guide.

The most widely used Python to C compiler

matplotlib: plotting with Python

JupyterLab computational environment.

Graph database optimized for fast analysis and real-time data processing. It is provided as an extension to PostgreSQL.

Point Cloud Library (PCL)

Generate types and converters from JSON, Schema, and GraphQL

Scalable, Portable and Distributed Gradient Boosting (GBDT, GBRT or GBM) Library, for Python, R, Java, Scala, C++ and more. Runs on single machine, Hadoop, Spark, Dask, Flink and DataFlow

Test suites for Web platform specs — including WHATWG, W3C, and others

The PHP Unit Testing framework.

Official repository for IPython itself. Other repos in the IPython organization contain things like the website, documentation builds, etc.

Like Prometheus, but for logs.

DyNet: The Dynamic Neural Network Toolkit

An extensible multilanguage static code analyzer.

The Community Maintained High Velocity Web Framework For Java and Scala.

Flutter plug-in providing (a few) basic bindings to OpenCV-4.x. OpenCV methods implemented without the Core packages. WIP.

:zap: Walt is a JavaScript-like syntax for WebAssembly text format :zap:

Ray is a unified framework for scaling AI and Python applications. Ray consists of a core distributed runtime and a set of AI Libraries for accelerating ML workloads.

:mag: ScanCode detects licenses, copyrights, dependencies by "scanning code" ... to discover and inventory open source and third-party packages used in your code. Sponsored by NLnet project https://nlnet.nl/project/vulnerabilitydatabase, the Google Summer of Code, Azure credits, nexB and others generous sponsors!

Additional completion definitions for Zsh.

A decentralized bitcoin exchange network

Kedro is a toolbox for production-ready data science. It uses software engineering best practices to help you create data engineering and data science pipelines that are reproducible, maintainable, and modular.

OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe

Apple Music...ish

A python framework for creating, editing, and invoking Noisy Intermediate Scale Quantum (NISQ) circuits.

Highly performant and modular controls for node-based editors designed for data-binding and MVVM.

Python reference implementation of The Update Framework (TUF)

FastAPI framework, high performance, easy to learn, fast to code, ready for production

An open-source, web-based viewer for zoomable images, implemented in pure JavaScript.

Boilerplate-free mocking framework for Swift!

A bunch of lints to catch common mistakes and improve your Rust code. Book: https://doc.rust-lang.org/clippy/

☁️ Nextcloud server, a safe home for all your data

xUnit.net is a free, open source, community-focused unit testing tool for .NET.

Fast data visualization and GUI tools for scientific / engineering applications

A hackable, minimal, fast TUI file explorer

Boa is an embeddable and experimental Javascript engine written in Rust. Currently, it has support for some of the language.

The best enterprise-grade WYSIWYG editor. Fully customizable with countless features and plugins.

A Scala API for Apache Beam and Google Cloud Dataflow.

The most popular open source electronic health records and medical practice management solution.

📱 Nextcloud Android app

🐻 The multi-zone service mesh for containers, Kubernetes and VMs. Built with Envoy. CNCF Sandbox Project.

Joplin - the secure note taking and to-do app with synchronisation capabilities for Windows, macOS, Linux, Android and iOS.

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

OBS Studio - Free and open source software for live streaming and screen recording