Yes, both GitHub and Visual Studio IDE offer a Free Trial.
GitHub is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Visual Studio IDE is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for GitHub Starts at $4/User/Month whereas for Visual Studio IDE Starts at $45/Month.
Some top alternatives to GitHub includes LiveCode, Codeanywhere, Visual Studio IDE, CodeinCloud, GitLive, Microsoft Azure, GitLab, CodeSee and Bitbucket.
Some top alternatives to Visual Studio IDE includes IntelliJ IDEA, Codeanywhere, Eclipse Che, CodeinCloud, CodeTogether, Microsoft Azure, ReSharper, CodeRush, Coder and CodeOnline.