Yes, both FogBugz and TestRail offer a Free Trial.
FogBugz is designed for Large Enterprises, Small Business and Medium Business.
TestRail is designed for Large Enterprises, Medium Business and Small Business.
Pricing details for both FogBugz and TestRail are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to FogBugz includes Freshbooks, Jira, Wrike, Smartsheet, Zoho Projects, GitScrum, Teamwork, ProjectManager.com, Backlog, Worksuite, Sprintly, Quick Base, ClickUp, Resource Guru, TestRail, Height, Yodiz and TaskBlast.
Some top alternatives to TestRail includes Jira, ReQtest, Zoho BugTracker, Bug-Track.com, TestCaseLab, Qase, Kualitee, QuAck, Crash Catch and QA touch.