Fossil is a cross-platform server that runs on Linux, BSD derivatives, Mac and Windows. It is capable of performing distributed version control, bug tracking, wiki services, and blogging. The software has a built-in web interface, which reduces project tracking complexity and promotes situational awareness. A user may simply type "fossil ui" from within any check-out and Fossil automatically opens the user's web browser in a page that gives detailed history and status information on that project.
Being distributed, Fossil requires no central server, although collaboration is made easier by using one.