browserling - Live interactive cross-browser testing from your browser.
html2canvas - JavaScript library to take "screenshots" of webpages or parts of it, directly on the...
Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
BackstopJS - BackstopJS is an open-source tool that allows the user to capture screenshots of a complete webpage or only specific areas of the webpage.
Browsershots - Browsershots makes screenshots of your web design in different browsers.
Expo Screen Capture - Expo Screen Capture is a highly efficient tool that empowers users to prevent screens in their applications from being captured or taped.