Wallal is a standalone LDAP-to-Web gateway. It allows you to search, add to, modify, and delete from an LDAP database. It can format entries and validate them upon submission, and the entries displayed are fully configurable. It was designed with a "personal" LDAP server in mind (one that is used primarily as a phonebook). However, it should be reasonably easy to modify it to do more complex operations on a directory.
Web Services Gateway is a middleware component that provides an intermediary framework between Internet and intranet enironments during Web service invocations. It includes a model for the management of services (deployment, undeployment, etc.) and "interceptors" (those pieces of code that act on requests/responses that flow through the gateway). It handles only incoming SOAP/HTTP requests (using either the Apache SOAP or Apache Axis engines), and requests passing through the gateway may be sent to a Java class, an EJB, or a SOAP server (including another gateway.)
Nanoweb is a modular Web server written in PHP. It is designed to be small, secure, and extensible. It is HTTP/1.1 compliant and has decent performance, CGI and FastCGI support, a nice configuration system, name-based virtual hosts, server side includes, authentication, gzip content encoding support, Apache combined format and MySQL logging, and many advanced features.
WebAbility is an advanced Web development platform that contains WebFlow, a content management system (CMS), a security advanced system (SAS), a powerful workflow engine, and Web site wrappers. It supports multiple database connections, multiple languages, multiple presentation templates, page, script, and library versioning, XML and Web Services integration, and advanced security management. It uses plugins to extend the software for tasks such as e-commerce, portals, intranets, and editorial systems.