Yes, both GitHub and TrueFoundry offer a Free Trial.
GitHub is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
TrueFoundry is designed for Large Enterprises, Medium Business and Small Business.
The starting price of GitHub begins at $4/User/Month, while pricing details for TrueFoundry are unavailable.
Some top alternatives to GitHub includes LiveCode, Codeanywhere, Visual Studio IDE, CodeinCloud, GitLive, Microsoft Azure, GitLab, CodeSee and Bitbucket.
Some top alternatives to TrueFoundry includes and undefined.