The Guardian
Yes, both TrackJS and Errorception offer a Free Trial.
TrackJS is designed for Large Enterprises, Medium Business and Small Business.
Errorception is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing details for both TrackJS and Errorception are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to TrackJS includes The Bug Squasher, Sentry, ReportBugz, Errorception, Marker.io, Ybug, Bug-Track.com, Disbug, BugBug and Crash Catch.
Some top alternatives to Errorception includes FullStory, Instabug, Sentry, Bugsnag, Usersnap, Marker.io, TrackJS, BugBug, iterspace and Meticulous.