Hacktoberfest
Hacktoberfest is a month-long celebration of open source projects, their maintainers, and the entire community of contributors. Each October, open source maintainers give new contributors extra attention as they guide developers through their first pull requests on GitHub.
By programming language
JavaScript • Python • Java
Here are 147,961 public repositories matching this topic...
📚 Freely available programming books
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Oct 12, 2026 - Python
All Algorithms implemented in Python
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Oct 14, 2026 - Python
A curated list of awesome Go frameworks, libraries and software
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Oct 14, 2026 - Go
🤗 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.
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Oct 14, 2026 - Python
Virtual whiteboard for sketching hand-drawn like diagrams
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Oct 13, 2026 - TypeScript
Promise based HTTP client for the browser and node.js
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Oct 13, 2026 - JavaScript
The new Windows Terminal and the original Windows console host, all in the same place!
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Oct 13, 2026 - C++
A Collection of application ideas which can be used to improve your coding skills.
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Oct 11, 2025
Design patterns implemented in Java
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Oct 8, 2026 - Java
#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere
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Oct 14, 2026 - TypeScript
Hunt down social media accounts by username across social networks
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Oct 14, 2026 - Python
🏡 Open source home automation that puts local control and privacy first.
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Oct 14, 2026 - Python
A list of useful payloads and bypass for Web Application Security and Pentest/CTF
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Aug 27, 2026 - Python
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.
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Oct 14, 2026 - TypeScript
Tesseract Open Source OCR Engine (main repository)
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Oct 10, 2026 - C++
A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScript 🚀
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Oct 14, 2026 - TypeScript
đź”— Some useful websites for programmers.
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Sep 16, 2025
Original Apollo 11 Guidance Computer (AGC) source code for the command and lunar modules.
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Jul 15, 2026 - Assembly
🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.
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Oct 14, 2026 - TypeScript
The Prometheus monitoring system and time series database.
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Oct 14, 2026 - Go
Created by DigitalOcean and GitHub
Released October 2014
- Followers
- 36.5k followers
- Website
- github.com/topics/hacktoberfest