GitHub offers Free Trial, but Clockly by 500apps does not.
GitHub is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Clockly by 500apps is designed for Large Enterprises, Medium Business and Small Business.
Pricing for GitHub Starts at $4/User/Month whereas for Clockly by 500apps Starts at $9.99/Month when Billed Yearly.
Some top alternatives to GitHub includes LiveCode, Codeanywhere, Visual Studio IDE, CodeinCloud, GitLive, Microsoft Azure, GitLab, CodeSee and Bitbucket.
Some top alternatives to Clockly by 500apps includes Connecteam, Smartsheet, Time Clock Wizard, clockodo, Hubstaff, Timesheets.com, Clockify, Clockk, Timeclock 365, OnTheClock and Open Time Clock.