Fortunately I have subscribed to the Atlassian newsletter. I learned about a special offer they were running for five days. Anyone who is interested could by Jira and Confluence for just $5 each. The only limitation is that only 5 users can be registered in these two programs. Atlassian wants to raise some charity money with this campaign. It is an excellent opportunity to get these two awesome tools if you have a couple of applications running, do your own business or are with a small team.
Jira is a Java based web application for issue- and bug tracking. It is used by the majority of the open source projects. Confluence is a Wiki application with tons of cool plugins, that can be integrated with Jira and other Atlassian products. You and your friends can use Confluence to share knowledge in a Web 2.0 fashion.