Open Source Projects with GPL-2.0 License

Free, fast and light forum application

User and membership management for organizations

Community-built shopping cart with a flexible template system

Photo gallery software for hosting images on your own site

PopSpace

An open-source virtual canvas that brings remote teams back into the same room

Groupware server for email, calendar, contacts and projects

Free PHP document management system

Mutt

Small, fast, text-based email client for the terminal

Lightweight flat-file CMS with true WYSIWYG

Pagure

A lightweight, Python-built git forge born out of the Fedora community

Flat-file blog that stores posts as plain text

Web form builder and data manager

Calligra Suite

KDE's office and graphic art suite

Small, speedy PHP discussion board

Mailing list manager for announcements and discussions

Multi-blog CMS with built-in user and workflow tools

PHP calendar for individuals and groups

Vietnam's first open-source multi-purpose CMS

Issue tracking system with email integration

SEO control panel for managing multiple websites

Fast PHP and MySQL CMS used on thousands of sites

Extensible object-oriented portal and CMS

Project management and collaboration over the internet

Fast discussion forum that doubles as a mailing list manager