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.
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.