GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Unfuddle - Unfuddle is a secure, hosted project management solution for software development teams.
XP-Dev.com - XP-Dev.com provides commercial grade Subversion Hosting (SVN Hosting) and Project Management tools.
Backlog - A cloud-based project management app for developers and their teams.
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
TaskBlast - Versatile and easy to use Project Management tool to get all team members involved.