The WAhelper project (http://www.freebsoft.org/wahelper) serves as a software tool for testing accessibility of Web sites. WAhelper consists of several components, two of them are:
WAusers is an assistive tool for managing multiple WAassistant installations. Its typical use is for providing public WAassistant services, when you need a global site user database with automated user registration and means for creating new WAassistant projects.
In a standard WAassistant project Roundup administrator creates new project, then logs in and defines its users, giving them project specific login names and passwords. If a WAassistant project is managed by WAusers instead, new projects are created using a Web application and WAassistant projects don't store users' passwords, WAassistant login names are mapped to WAusers login names for the purpose of authentication. So a single WAusers user uses the same password for all WAassistant projects he participates on.
Both WAusers and WAssistant are implemented on top of Roundup, a flexible issue tracking system, and their user interfaces are similar.