Yes, both Instabug and zipBoard offer a Free Trial.
Instabug is designed for Large Enterprises, Medium Business and Small Business.
zipBoard is designed for and undefined.
The starting price of zipBoard begins at $39/Month when Billed Yearly, while pricing details for Instabug are unavailable.
Some top alternatives to Instabug includes The Bug Squasher, Sentry, Bugsnag, Zoho BugTracker, Bugfender, BugHost, Bug-Track.com, Disbug, Crash Catch and BugBattle.
Some top alternatives to zipBoard includes FogBugz, Backlog, The Bug Squasher, ReportBugz, BugHerd, Buglog, Ybug, Bug-Track.com, Disbug and Toybox.