Yes, both ScreenSight and ScreenFlow offer a Free Trial.
ScreenSight is designed for Large Enterprises, Medium Business and Small Business.
ScreenFlow is designed for Medium Business and Small Business.
Pricing for ScreenSight Starts at $19/Month whereas for ScreenFlow Starts at $129.
Some top alternatives to ScreenSight includes Pitchy, Scribe, ScreenFlow, Snagit, Jumpshare, hubPitch, berrycast, YouPitch.Me and Screenrec.
Some top alternatives to ScreenFlow includes Create, VideoStudio Pro, Camtasia, Loom, Snagit, Vmaker, RecordCast, Filmage Screen and iMovie.