OpenEJB
- Open Source Enterprise Java Beans (EJB) Container System and Server. [BSD-style license]
- http://incubator.apache.org/openejb/

TechWeb: Is There an Open-Source Solution?
- With little or no marketing budget, open-source software is finding its way into the back offices of the largest companies and is powering some of the highest-bandwidth Web sites on the Internet.
- http://www.techweb.com/wire/story/TWB20001218S0015

OpenFrame
- Java-based framework for portal applications, providing API's and ready-to-use tools for pages, portlets, user management, content management, collaboration and community services. (LGPL)
- http://sourceforge.net/projects/openframe

The iChilli mobile J2EE platform
- Provides a J2EE compliant runtime environment for both server and mobile platforms, such as J2ME, MIDP or other CLDC based devices (e.g. runs on the PersonalJava enabled Sharp Zaurus and Compaq's iPAQ).
- http://ichilli.sourceforge.net/

Whitebeam
- An open-source project which provides a complete development environment for web applications using only XML and JavaScript.
- http://www.whitebeam.org/

ModeliXe
- XML-compliant templating solution for PHP
- http://modelixe.phpedit.com

GNU-Paperclips
- Servlet API 2.1 servlet container. It provides HTTP/1.1 compliance and has an easy to use admin interface. [Open Source, GPL]
- http://www.gnu.org/software/paperclips/

SkunkWeb
- An open source, easily extensible, high performance application server, written in Python.
- http://skunkweb.sourceforge.net/

JOnAS (Java Open Application Server)
- Distributed platform compliant with the EJB specifications [MPL-like license]
- http://www.objectweb.org/jonas/

Webkool
- Application server written in the Key programming language. Includes source, documentation, downloads, and mailing list. [Open Source, LGPL]
- http://www.webkool.net/

PHPAppl - PHP Application Server
- PHP-based project geared toward creating web-development environment for non-programmers. Plans to allow web-interface to predefined modules for forums, yellow pages, and news.
- http://phpappl.sourceforge.net

WebWare for Python
- A suite of software components for developing object-oriented, web-based applications. [Open Source, Python license]
- http://webware.sourceforge.net/

O'Reilly Network: JSP vs. XSP [Feb. 22, 2001]
- Sue Spielman looks at JSP and XSP to help you decide which is right for your development needs.
- http://www.oreillynet.com/pub/a/onjava/2001/02/22/jsp_servlets.html

OpenThought Communications
- OpenThought is a Web application engine. Designed to create pages that communicate with web server from DHTML using XML to update portions of page rather than requiring entire page reloads.
- http://openthought.net/

Roxen Webserver
- 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.
- http://www.roxen.com/products/webserver/

Jellybean Object Web server
- A Perl-based application server modeled after Zope. Still in the early phases of development.
- http://wgz.org/chromatic/jellybean.html

AxKit
- 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.
- http://axkit.org

SteelBlue
- Open-source Web application server environment in which Web-database applications can be developed completely in an extended HTML language. Similar to ColdFusion.
- http://www.steelblue.com/

Enhydra
- Java-based application server with XML features, licensed under BSD-like license
- http://www.enhydra.org/

maki
- XML/XSLT processor utilizing Apache and mod_python.
- http://maki.sourceforge.net