Yes, both Blit and GrabzIt offer a Free Trial.
Blit is designed for Medium Business and Small Business.
GrabzIt is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Blit Starts at $10/Month whereas for GrabzIt Starts at $5.69/Month when Billed Yearly.
Some top alternatives to Blit includes Capture, Snapchive, Screenshot Machine, Page2Images, GrabzIt, ScreenshotAPI, Snapup, Screenlapse and Clipt.
Some top alternatives to GrabzIt includes Capture, Urlbox, Screenshot Machine, Page2Images, Screenshotlayer, ScreenshotAPI, Snapup, Screendot, Awesome Screenshot and ScreenshotOne.
