It's pretty well known that Teamprise provides a TFS client that allow access to TFS from Mac, Unix (and Windows).  Their client includes Eclpse integration, a stand-alone explorer and a command-line clent.  What's not well known is that they are currently working on mainframe support as well.  Pretty soon you'll be able to access TFS from everywhere you do development.

I'm really thrilled they are taking this step because I've always believed that it's important that all people in a software development project are able to access the project resources no matter what their role and no matter what platform they are on.  I'm really looking forward to seeing how this evolved.

Read more about it here: http://www.woodwardweb.com/vsts/tfs_on_the_main.html

Brian