Yes, both Planio and DoneDone offer a Free Trial.
Planio is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
DoneDone is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Planio Starts at $25/Month whereas for DoneDone Starts at $4/User/Month when Billed Yearly.
Some top alternatives to Planio includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Jira, Wrike, FogBugz, Teamwork, ProjectManager.com, Backlog, Quick Base, Redmine X, Height, Ravetree, RedmineUP and Project Insight.
Some top alternatives to DoneDone includes Backlog, Teamwork Desk, Issuetrak, HelpDesk, Snappy, TestRail, Bug-Track.com, Disbug, TaskSift and Crash Catch.