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.
DownGit - Directly download or create download links to GitHub public folders or files.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
GitZip - Download or create a download link for a GitHub project folder/sub-folder or file.
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful