Free alternative to Atlassian Greenhopper/PivotalTracker? [closed]

Taiga is 100% free and has all the features that comes with something like JIRA.

http://taiga.io/

It even has a burn-down chart! So that's a win!

Here's a site with a nice overview of what Taiga integrates with and real developer opinions on the tool.

http://stackshare.io/taiga

Trello is a good tool for creating task boards and tracking work for small teams.

https://trello.com/

I get this question a lot as a Scrum Trainer.

I strongly recommend Index Cards and a Physical Scrum Board. While it won't calculate time addition for you, that task is trivial and the 'information at a glance' that a Scrum Board offers is hugely beneficial.

If you absolutely HAVE to have an electronic board, try Visual Studio Online (TFS in the cloud) which, at present, is free for up to 5 users.