LightShot, Greenshot, Snagit, Snipping Tool, ShareX, Flameshot, PicPick, Spectacle, Shottr, Evernote Web Clipper, HyperSnap, SiteShoter, CutyCapt, Awesome Screenshot Minus, Snapito, web-capture, Nimbus Clipper, OnPaste, Screen Shot Tool PRO, Chrome Clipper V2, Abduction, IcyScreen, iWeb2X, Web Clipper: Easy Screenshot, Pixlr Grabber, Webpage Screenshot, VMN Toolbox, iWeb2Shot, Deskscan are some alternatives to FireShot.