GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
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.
Launchpad.net - Launchpad is a software collaboration platform by Canonical
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
openDesktop.org - The website openDesktop.
Trac - Trac is a project management and bug/issue tracking system. Provides an interface to Subversion and an integrated wiki.