What are some alternatives?
When comparing SourceForge and GitHub, you can also consider the following products
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Launchpad - Launchpad
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.
Phabricator - Phacility - Phabricator
Assembla - Integrated, on-demand tools to build software faster, with less stress. Get started for free and find out why over 800,000 users trust Assembla.