DoneDone offers Free Trial, but MantisBT does not.
MantisBT is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
DoneDone is designed for Large Enterprises, Medium Business and Small Business.
The starting price of DoneDone begins at $4/User/Month when Billed Yearly, while pricing details for MantisBT are unavailable.
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 DoneDone includes Backlog, Teamwork Desk, Issuetrak, HelpDesk, Snappy, TestRail, Bug-Track.com, Disbug, TaskSift and Crash Catch.