This script will detect the presence of the Alexa Toolbar on Microsoft Windows and Internet Explorer 5.0 or higher. Updated script detects the newer generation of the Alexa Toolbar.
Developer: banbots.com Platform: Date upd:2003-12-01 Hits1742 [Visit]

Useful for finding out the capability of some HTML-browser to display certain characters defined in the unicode character database. Additionally it can help to find a certain dec/hex value for a specific character by browsing through the unicode sets.
Developer: soldin.de Platform: Mozilla 1.6, Opera 6, IE6 and others Date upd:2004-04-10 Hits1720 [Download] [Visit]

This is a DHTML redirect script that sends your visitors to three different pages, depending on whether she is using NS 4+, IE 4+, or neither. It's a fool-proof way to ensure that only the intended browser gets to see and run a browser-specific
Developer: dynamicdrive.com Platform: Date upd:2000-08-27 Hits7216 [Visit]

More information about the web browser than you knew existed. Find out the code name, color depth, platform, if java is enabled, resolution, ip address, hostname, and more.
Developer: javascript.internet.com Platform: Independent Date upd:1999-08-22 Hits15813 [Visit]

This script finds out and displays your visitors computer hostnames. It works only for Netscape Browsers with Java enabled.
Developer: javascript.internet.com Platform: Independent Date upd:1999-08-23 Hits4898 [Visit]