TestMonitor offers Free Trial, but MantisBT does not.
MantisBT is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
TestMonitor is designed for Medium Business, Small Business and Freelancers.
Pricing details for both MantisBT and TestMonitor are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to MantisBT includes Jira, The Bug Squasher, Zoho BugTracker, ReportBugz, BugHerd, BugHost, Bug-Track.com, Disbug, Redmine X and Bugasura.
Some top alternatives to TestMonitor includes and undefined.