XML-compliant templating solution for PHP
XML/XSLT processor utilizing Apache and mod_python.
a tool for creating, modifying and maintaining dynamic database-enabled web services. [Free, Open Source, GPL]
Java-based application server with XML features, licensed under BSD-like license
Web server/application server which allows for tag handlers similar to ColdFusion. Branched from Roxen Webserver.
Open-source Web application server environment in which Web-database applications can be developed completely in an extended HTML language. Similar to ColdFusion.
XML Application Server for Apache. Provides on-the-fly conversion from XML to any format, such as HTML, WAP or text using either W3C standard techniques, or custom code. AxKit also uses a built-in Perl interpreter to provide for XML transformation.
A Perl-based application server modeled after Zope. Still in the early phases of development.
Web server & application server which includes support for RXML, a tag-based language for constructing dynamic content. Allows tag plugins to be written in Pike.
Java-based application server that allows for definition of custom tags, developed by a research group at Ricoh. Currently developing an Office Forms system, a shared Calendar, and a browser-independent bookmark and history manager.