IBM
Yes, both Quire and GitHub offer a Free Trial.
Quire is designed for Individuals, Large Enterprises, Medium Business and Small Business.
GitHub is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Quire Starts at $8/member/month when yearly whereas for GitHub Starts at $4/User/Month.
Some top alternatives to Quire includes monday.com, Quickbase , Smartsheet, ClickUp, Trello, Wrike, TeamGantt, Zoho Projects, Asana, Teamwork, ProjectManager.com, Kanboard, Kanbanize, Quick Base, Zenkit Projects and Kanban Tool.
Some top alternatives to GitHub includes LiveCode, Codeanywhere, Visual Studio IDE, CodeinCloud, GitLive, Microsoft Azure, GitLab, CodeSee and Bitbucket.