Yes, both GitHub and Zebrunner offer a Free Trial.
GitHub is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Zebrunner is designed for Large Enterprises, Medium Business and Small Business.
Pricing for GitHub Starts at $4/User/Month whereas for Zebrunner Starts at $1,149 when Billed Monthly.
Some top alternatives to GitHub includes LiveCode, Codeanywhere, Visual Studio IDE, CodeinCloud, GitLive, Microsoft Azure, GitLab, CodeSee and Bitbucket.
Some top alternatives to Zebrunner includes Provar, BrowserStack, LambdaTest, Apptest.ai, Endtest, Katalon Studio, Testim, Firelab, TestFairy and HyperTest.