www.browsershots.org
<br>ipinfo.info/netrenderer/
<br>www.browsrcamp.com (Safari 3.1.2 only)
<br>www.crossbrowsertesting.com (via vnc or java applet. often not working. when it works its great.)
<br>www.litmusapp.com
<br>www.browserpool.de (did not get it to work)
<br>browserlab.adobe.com (did not try it, because it asks me to install flas 10 and i heard that you need an adobe account)