Taiga.Io : Taiga is a project management platform for startups and agile developers & designers who want a simple, beautiful tool that makes work truly enjoyable...
ProjectPier.org : ProjectPier is a Free, Open-Source, PHP application for managing tasks, projects and teams through an intuitive web interface. It must be downloaded a...
Fun Retro : Easy to use and beautiful restrospective board.
unleash : Open-source feature management solution built for developers.
Retrospectiva is an open source, web-based, project management and bug-tracking tool.
It is intended to assist the collaborative aspect of work carried out by software
development teams through the use of blogs, a wiki and tickets.