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.
Copydue - Top writers, on-demand for as low as $150/mo
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Mailbutler - Mailbutler adds lacking functionality to email clients and increases your productivity
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
PubLoft - Freelancer network for writers powered by the gig economy