Say what you will about the Ajax Control Toolkit. Some like it, some don't, but it got 1.15 MILLION downloads last year. Is the ACT dead? Not yet, and there's ongoing work around WebForms, jQuery and an ACT style of programming. More on this soon. There's like 40 different controls in the Ajax Control Toolkit. They continue to be updated and have cross-browser support. The first release this year added IE9 support. This new July 2011 release adds a a new HTML Editor and more complete browser support including (from Stephen Walther's blog): The HTML Editor Extender works on all modern browsers including the most recent versions of Mozilla Firefox (Firefox 5), Google Chrome (Chrome 12), and Apple Safari (Safari 5). Furthermore...(read more) ...
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