Web Directory

» Acid Tests
   A series of tests from the Web Standards Project to assess the standards support of web browsers. Also includes tests themselves, reference renderings, descriptions of the functions tested.
   http://www.acidtests.org/

» Acid2 in Major Browsers
   Screenshots and discussion of the rendering of the Acid 2 test by different versions of various browsers.
   http://www.howtocreate.co.uk/acid/

» Browser Zoom Comparison
   Compares the zoom function and its results on all the major browsers.
   http://alastairc.ac/2006/11/browser-zoom-comparison/

» Browsershots
   Generates screenshots of how websites appear at vraious resolutions in several commonly used web browsers.
   http://www.browsershots.org/

» CSS3 . info - CSS Selectors testsuite
   Test to determine whether your browsers supports all CSS selectors.
   http://www.css3.info/selectors-test/

» Google Labs: Browser Size
   Simple visual tool to show what percentage of web users can see different areas of a website without needing to scroll.
   http://browsersize.googlelabs.com/

» IE Netrenderer
   Online tool allowing to verify how websites appear in Microsoft Internet Explorer 5.5, 6 and 7.
   http://ipinfo.info/netrenderer/

» Opera Files Antitrust Complaint with the EU
   Press release coving Opera Software's complaint that asks the EU to help give consumers a genuine choice of standards—compliant Web browsers.
   http://www.opera.com/pressreleases/en/2007/12/13/

» QuirksMode DOM Compatibility Tables
   Provides detailed studies and suggested work-arounds for various browser incompatibilities relating to modern standards.
   http://www.quirksmode.org/dom/compatibility.html

» Robin's HTML 4.0 Conformance Test
   Test a browser's support for new HTML 4.0 elements. Includes a table of results for several popular browsers.
   http://www.robinlionheart.com/stds/html4/

» Web Browser Standards Support
   Tables comparing support for different feature of HTML, CSS, DOM, and ECMAScript in Internet Explorer, Firefox, and Opera.
   http://www.webdevout.net/browser-support

» When Can I Use...
   Provides compatibility tables for features in HTML5, CSS3, SVG and other upcoming web technologies.
   http://caniuse.com/

» Wikipedia: Comparison of Web Browsers
   Provides various tables giving an overview of the features and support for various standards present in a number of different browsers.
   http://en.wikipedia.org/wiki/Comparison_of_web_browsers