wmlbrowser - Simulates WAP browsing by viewing WML pages as a plugin for Mozilla Suite, SeaMonkey or Firefox. - http://wmlbrowser.mozdev.org/
Numeric Algorithm Laboratories - M3Gate is a WAP browser which can be integrated with Microsoft Internet Explorer (version 4 or later) and Netscape Communicator (version 4.5 or later). It is available for Pocket PCs with ARM, MIPS and SH3 processors. - http://www.numeric.ru/m3gate/
wApua - A WAP browser written in Perl/Tk. [Released under the GNU General Public License] - http://fsinfo.cs.uni-sb.de/~abe/wApua/
Apache Software Consulting Inc. - Produces a wide range of WAP browsers for different devices. - http://www.apachesoftware.com
Winwap Technologies - WAP browser for viewing the mobile Internet, works over ordinary home Internet connections. Also offer software libraries for developers wanting to add MMS and WAP functionality to their solutions. [Windows, PocketPC] - http://www.winwap.com/