Yes, both GitHub and StoriesOnBoard offer a Free Trial.
GitHub is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
StoriesOnBoard is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for GitHub Starts at $4/User/Month whereas for StoriesOnBoard Starts at $9/user/month when yearly.
Some top alternatives to GitHub includes LiveCode, Codeanywhere, Visual Studio IDE, CodeinCloud, GitLive, Microsoft Azure, GitLab, CodeSee and Bitbucket.
Some top alternatives to StoriesOnBoard includes Todoist, Aha!, Jira, productboard, Productroad, Next Please, Wrike, Smartsheet, ClickUp, FeatureMap, Height, Featmap and Avion.