HP Netserver WAP Gateway Solutions
Hewlett-Packard aims to provide enterprise customers with a comprehensive e-service solution of which the Nokia WAP Server 1.0 software is an integral part.

Hewlett Packard Portal
Whatever your business, there is a WAP NetServer for you whether your company is a small business or a large enterprise, there is a NetServer solution to suit you. http://www.mschp.com/wap/

Integra Micro Systems
Integra Micro Systems - Unwiring the planet

Kannel Open Source WAP Gateway
Open Source WAP Gateway for Windows and Unix

Mobileways WAP Gateway
Another WAP Gateway

RealWow ltd.
WAP-GateWay Software and Services Provider. (www.qtamo.com)

Symbian
Powering the heart of wireless.

Teodora WAP
http://www.teodora.hu/index.wml

V3 World
Extends a web site so that it can be accessed via any mobile phone using WAP or SMS features. Allows business processes on an intranet to be accessed remotely. Also includes an open development interface called WAPI which allows mobile functionality to be emebedded into an application. Comes with free WAPI source code and a number of examples.