Pivotal Tracker - Pivotal Tracker: The awesome, lightweight, agile project management tool for software teams. Get your 30-day Free Trial started today!
Trac - Trac is a project management and bug/issue tracking system. Provides an interface to Subversion and an integrated wiki.
ZenHub - ZenHub is how the world's best software teams work together. Trusted by NASA, Docker, and Rackspace. Start free today!
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.
Gitea - A painless self-hosted Git service
Linear - Streamlined issue tracking for software teams