Yes, both GitHub and Creo offer a Free Trial.
GitHub is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Creo is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for GitHub Starts at $4/User/Month whereas for Creo Starts at $99/Year.
Some top alternatives to GitHub includes LiveCode, Codeanywhere, Visual Studio IDE, CodeinCloud, GitLive, Microsoft Azure, GitLab, CodeSee and Bitbucket.
Some top alternatives to Creo includes AppElixir, Nwicode, AgilePoint NX, A2Zapps, AppInstitute, Native, iofod and AppMaster.io.