Web Application GitHub Repositories (2026) · Open Source Tools

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

Independent technology for modern publishing, memberships, subscriptions and newsletters.

Manage your photos with Piwigo, a full featured open source photo gallery application for the web. Star us on Github! More than 200 plugins and themes available. Join us and contribute!

The fully-stacked web framework

Google Reader inspired self-hosted personal RSS reader.

Share files with your clients, from your own server. Free, open source (GPLv2), self-hosted — or use ProjectSend Cloud, the official hosted version run by the same team.

Multi-Mission Geographic Information System - A Web-based Mapping and Spatial Data Infrastructure for Earth, Lunar and Planetary Visualization, Research, Science, Planning and Operations.

BT ve siber güvenlik risk yönetimi platformu — risk envanteri, 5×5 değerlendirme, aksiyon takibi ve kurumsal raporlama. PHP 8.3 + MariaDB, framework ve CDN kullanmadan.

A clean, Markdown-based publishing platform made for writers. Write together and build a community.

🛡️ Warracker is an open source, self-hostable warranty tracker to monitor expirations, store receipts, files. You own the data, your rules!

C++ application development framework, to help developers create and deploy applications quickly and simply

Platform repository of Consulo. Plugins implementation hold in their repositories

🌈 Deterministic tints and shades from a given hex color.

A web application to help Japanese language learners remember the kanji.

Advanced Chess Assistance System for Chess.com, Lichess.org, Pychess.org and more. Hassle-free 1-click install, no downloading. All devices and browsers supported.

Open source reporting and monitoring tool for Bacula

Senchabot Community Edition monorepo. Web and bot projects for Senchabot Twitch and Discord bots.

DMX Knowledge Building Platform

Web-based student and staff attendance management system

The repo for hledger.org, the hledger project's website.