Yes, both Paymo and zipBoard offer a Free Trial.
Paymo is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
zipBoard is designed for and undefined.
Pricing for Paymo Starts at $4.95/User/Month when Billed Yearly whereas for zipBoard Starts at $39/Month when Billed Yearly.
Some top alternatives to Paymo includes Smartsheet, Miro, Process Street, Wrike, Notion, TeamGantt, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project, ProWorkflow, VisionProject, Quick Base, ClickUp, Height and Project Insight.
Some top alternatives to zipBoard includes FogBugz, Backlog, The Bug Squasher, ReportBugz, BugHerd, Buglog, Ybug, Bug-Track.com, Disbug and Toybox.