Wow: seems to be that every web-developer doesn’t do anything except Ajax!
Today, walking trough various blog I had found these interesting thing written in (and for) Ajax:
* [<strong>Lightbox JS</strong>](http://www.huddletogether.com/projects/lightbox/) - a <em>simple</em>, <em>unobtrusive script </em>used to overlay images on the current page. It's a snap to setup and works on<strong><em> all modern browsers</em></strong>. Simple and very Beautiful way to show photos in a web page (it's ideal to be used in a Web-Based-Photo-Gallery).
* [<strong>Tooltip.js</strong>](http://tooltip.crtx.org/) - NEXT GENERATION in Tooltips; using the Web 2.0 approach of doing a simple thing, and doing it well. It's based on [script.aculo.us](http://www.detronizator.org/home/index.php?s=script.aculo.us) (and then [prototype.js](http://www.detronizator.org/home/index.php?s=prototype.js)) and... it's a very-cool way to put tooltip into a web page.
* [REXV - Regular EXpression eValuator](http://www.rexv.org/) - [Regular Expression](http://en.wikipedia.org/wiki/Regexp) evaluator for three different regular expression systems. It's written in Ajax and it's very very usefull for regexp-addicted developer. It understand: <em>PHP PCRE</em>, <em>PHP Posix</em>, <em>Javascript regexp</em>.