Nifty - Manage projects, work, and communications in one place.
Collabtive - Collabtive is a web-based project management software.
UpDiagram - Free agile project management tool for scrum team
Teamwork - The Project Management App for Professionals. The most powerful and simple way to collaborate with your team.
Chpokify - Planning Poker Tool that saves time of sprint estimation. Agile teams management tools. Jira Integration (Import/Export), auto-summary, smart voting management.
Flyspray - The bug killer!