Team Foundation Server (tfs) - why here? Correlating the scrum components, back log items ( tasks), bugs, builds and unit tests can be all be managed by tfs and its link to Visual Studio Team Edition. Although supporting Microsoft may not be the most popular, I like TFS. I prefer it over using several products to support these different components - NUnit, Scrumworks or On Time or ..., Jiri etc. Having all this in one spot without having to start several different applications increases the time I have to code and develop good code. So I include it here as a reminder that tools are needed to do any of the types of agile - more than just spreadsheets - and I like tfs.