Stitch It! - Capture long screenshots with your iPhone or iPod touch
browserling - Live interactive cross-browser testing from your browser.
Web to Image - API for taking screenshot of a webpage from URL or HTML
BrowserStack - BrowserStack is a software testing platform for developers to comprehensively test websites and mobile applications for quality.
Vondy - Next generation AI apps
Browsershots - Browsershots makes screenshots of your web design in different browsers.