What are some alternatives?
CutyCapt - CutyCapt is a small cross-platform command-line utility to capture WebKit's rendering of a web...
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
browserling - Live interactive cross-browser testing from your browser.
Snagit - Screen Capture Software for Windows and Mac
CrossBrowserTesting - Browser Testing made simple! Run automated, visual, and manual tests on 1500+ real browsers and mobile devices. Test more browsers, in less time.
LightShot - The fastest way to take a customizable screenshot.