hacktoberfest

:books: Freely available programming books

All Algorithms implemented in Python

A curated list of awesome Go frameworks, libraries and software

🤗 Transformers: the model-definition framework for state-of-the-art machine learning models in text, vision, audio, and multimodal models, for both inference and training.

Virtual whiteboard for sketching hand-drawn like diagrams

Promise based HTTP client for the browser and node.js

The new Windows Terminal and the original Windows console host, all in the same place!

A Collection of application ideas which can be used to improve your coding skills.

Design patterns implemented in Java

#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere

Hunt down social media accounts by username across social networks

:house_with_garden: Open source home automation that puts local control and privacy first.

A list of useful payloads and bypass for Web Application Security and Pentest/CTF

The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.

Tesseract Open Source OCR Engine (main repository)

A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScript 🚀

:link: Some useful websites for programmers.

Original Apollo 11 Guidance Computer (AGC) source code for the command and lunar modules.

🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.

The Prometheus monitoring system and time series database.

📜 33 JavaScript concepts every developer should know.

Easy to maintain open source documentation websites.

All Algorithms implemented in Java

🔥 🔥 🔥 A Free & Self-hostable Airtable Alternative

Iconic font aggregator, collection, & patcher. 3,600+ icons, 50+ patched fonts: Hack, Source Code Pro, more. Glyph collections: Font Awesome, Material Design Icons, Octicons, & more

Scrapy, a fast high-level web crawling & scraping framework for Python.

Collaborative cheatsheets for console commands 📚.

Git Source Code Mirror - This is a publish-only repository but pull requests can be turned into patches to the mailing list via GitGitGadget (https://gitgitgadget.github.io/). Please follow Documentation/SubmittingPatches procedure for any of your improvements.

Termux - a terminal emulator application for Android OS extendible by variety of packages.

The full-stack Vue framework.

A cat(1) clone with wings.

🐻 Bear necessities for state management in React

Git with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD

The open alternative to Salesforce, designed for AI.

The Free Software Media System - Server Backend & API

PowerShell for every system!

🔍 A Hex Editor for Reverse Engineers, Programmers and people who value their retinas when working at 3 AM.

The repository for high quality TypeScript type definitions.

We write your reusable computer vision tools. 💜

🚀 Awesome list of open source applications for macOS. https://t.me/s/opensourcemacosapps

ClickHouse® is a real-time analytics database management system

The Julia Programming Language

The modern video player for macOS.

The Secure CommsOS™ for mission-critical operations

Developer-first error tracking and performance monitoring

A powerful little TUI framework 🏗

Open source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, fraud, vault and tokenization providers | Uplifts authorization with intelligent routing and revenue recovery | Reduce payment processing costs with cost observability | Reduces payment ops with reconciliation

A simple, fast and user-friendly alternative to 'find'

Meteor, the JavaScript App Platform

A one-of-a-kind resume builder that keeps your privacy in mind. Completely secure, customizable, portable, open-source and free forever. Try it out today!

A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, MQTTS, POP3, POP3S, RTSP, SCP, SFTP, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features

🚀 The easiest way to automate building and releasing your iOS and Android apps

The uncompromising Python code formatter

A fast, simple & powerful blog framework, powered by Node.js.

A community-maintained Python framework for creating mathematical animations.

Platform to build admin panels, internal tools, and dashboards. Integrates with 25+ databases and any API.

Source for remoteintech.company — a community-maintained directory of remote-friendly tech companies

TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, analytics, and vector search. No data silos. No noisy neighbors. No infrastructure ceiling.

⚡️ Express inspired web framework written in Go

A smarter cd command. Supports all major shells.

Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

Metasploit Framework

Making Docker and Kubernetes management easy.

Harness Open Source is an end-to-end developer platform with Source Control Management, CI/CD Pipelines, Hosted Developer Environments, and Artifact Registries.

Find vulnerabilities, misconfigurations, secrets, SBOM in containers, Kubernetes, code repositories, clouds and more

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

Fast and low overhead web framework, for Node.js

A markdown parser and compiler. Built for speed.

☁️ Nextcloud server, a safe home for all your data

TypeScript & JavaScript ORM for Node.js — supports PostgreSQL, MySQL, MariaDB, SQLite, SQL Server, Oracle, and more.

⏳ Modern JavaScript date utility library ⌛️

A React Framework for building internal tools, admin panels, dashboards & B2B apps with unmatched flexibility.

A boilerplate for Node.js web applications

A platform for building proxies to bypass network restrictions.

Backstage is an open framework for building developer portals

Algorithms and Data Structures implemented in JavaScript for beginners, following best practices.

微信开发 Java SDK ，支持包括微信支付，开放平台，小程序，企业微信，视频号，公众号等的后端开发

A JavaScript library to position floating elements and create interactions for them.

CockroachDB — the cloud native, distributed SQL database designed for high availability, effortless scale, and control over data placement.

Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple YAML-based DSL, enabling collaboration to tackle trending vulnerabilities on the internet. It helps you find vulnerabilities in your applications, APIs, networks, DNS, and cloud configurations.

A modern load testing tool, using Go and JavaScript

⚡️ Streaming torrent client for the web

Client-side JavaScript PDF generation for everyone.

Powerful yet simple to use screenshot software :desktop_computer: :camera_flash:

The Symfony PHP framework

Python sample codes and textbook for robotics algorithms.

The fast, flexible, and elegant library for parsing and manipulating HTML and XML.

:memo: An awesome Data Science repository to learn and apply for real world problems.

Scale computer-use 2.0 with open-source drivers, cross-OS sandboxes, and benchmarks for training, evaluation, and data generation.

Find secrets with Gitleaks 🔑

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

An open source trusted cloud native registry project that stores, signs, and scans content.

The Monorepo Platform that amplifies both developers and AI agents. Nx optimizes your builds, scales your CI, and fixes failed PRs automatically. Ship in half the time.

Hey is a decentralized and permissionless social media app built with Lens Protocol 🌿

KeePassXC is a cross-platform community-driven port of the Windows application “KeePass Password Safe”.

The best way to start a full-stack, typesafe Next.js app

Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.

Like Prometheus, but for logs.

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