Hacktoberfest Open Source Projects

:books: Freely available programming books

A curated list of awesome Go frameworks, libraries and software

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

:link: Some useful websites for programmers.

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

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.

Bring projects, wikis, and teams together with AI. AppFlowy is the AI collaborative workspace where you achieve more without losing control of your data. The leading open source Notion alternative.

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

Open Data Platform for analysts, quants and AI agents.

🌟 The Multi-Agent Framework: Given one line Requirement, return PRD, Design, Tasks, Repo

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

The Prometheus monitoring system and time series database.

🔥 🔥 🔥 A Free & Self-hostable Airtable Alternative

Unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs

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

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.

The Open Source RAG framework

the full-stack Vue framework

A cat(1) clone with wings.

🐻 Bear necessities for state management in React

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

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 Free Software Media System - Server Backend & API

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

🎥 Make videos programmatically with React

The repository for high quality TypeScript type definitions.

An open-source user mode debugger for Windows. Optimized for reverse engineering and malware analysis.

The Julia Programming Language

ClickHouse® is a real-time analytics database management system

A refreshingly simple data-driven game engine built in Rust

The Secure CommsOS™ for mission-critical operations

The modern video player for macOS.

Meteor, the JavaScript App Platform

Developer-first error tracking and performance monitoring

A powerful little TUI framework 🏗

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

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

Build and share delightful machine learning apps, all in Python. 🌟 Star to support our work!

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, SMB, SMBS, 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

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

The fastest knowledge base for growing teams. Beautiful, realtime collaborative, feature packed, and markdown compatible.

A community-maintained Python framework for creating mathematical animations.

Build AI 🤖 using SQL

API Documentation Browser

Metasploit Framework

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

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!

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

A smarter cd command. Supports all major shells.

Making Docker and Kubernetes management easy.

Gitness is an Open Source developer platform with Source Control management, Continuous Integration and Continuous Delivery.

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

☁️ Nextcloud server, a safe home for all your data

🎥 Command line media player

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

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

Collection of various algorithms in mathematics, machine learning, computer science and physics implemented in C++ for educational purposes.