The Source of the open source!

The Open Source Page
If you want to begin an open source project take a look at this site first. You'll find license model for open source, etc.

Open-Source Software: the Customer Case
Just an interesting article about open source.

Open Source Writers Group
If you look for articles about open source projects and products, don't forget to take a glance at this site.

SourceForge
This is the Open Source Software Portal. There are many OSS projects hosted at this site. A very good beginning for an open source project!

CampusSource
This is an Open Source Software Portal for the university in Germany. Available in German and English.

BerliOS
This is an Open Source Software Portal in Germany. BerliOS - Der Open-Source-Mediator.

Educational Organizations

ADLNET
This is the source of SCORM (Sharable Course Object Reference Model). provides a reference model defining a Web-based learning "content model"; set of interrelated specifications; process that knits together disparate groups; and a bridge from emerging technologies to commercial implementation.

IMS
IMS Global Learning Consortium.

EJB/application/XML server

JOnAS: home page
JOnAs is the most famous open source EJB server from ObjectWeb.

JBoss
Another open source EJB server.

The home of Enhydra.org
This is a great application server and XML server. A joint venture within Object Web Open Source.

Object Web Open Source
JOnAs, Enhydra and Jonathan ORB.

Javacorporate Home | Web Portal Components
This web portal has many open source components  in Java. Just take a glance and you'll be surprised!

Java, XML, & the Enterprise
Private little project.

OpenCms
Open source application server for content management system.

Welcome to Zope.org
Zope enables teams to collaborate in the creation and management of dynamic web-based business applications such as intranets and portals. 

The Locomotive Project
Another application server. (o gosh!). Various services the Locomotive has built into websites include content management and publishing systems, online storefronts, web-based e-mail systems, database interfaces, and consumer-oriented online services.

OpenSales
Open source application server for an e-commerce system.

Web browser

JoZilla Spotter's Guide
Open Source Code Java Browser.

Web server

The Apache Software Foundation
But Apache is not only web server. They have many other open source projects, like Jakarta for instance.

AOLServer

JSP JavaServer Pages support products

JForms Home Page

FreeMarker

K L O M P
The homepage of GNUJSP and servlets.

Vendor orientated open source projects

Research IBM Jikes

OpenSource.Corel.com: Home Page

WAP and Gateway open source

openwap.org: WAP Open Source Project

www.kannel.org

Java database open source

HypersonicSQL
100% Java database and of course open source! (Relational).

Collection of "little" open source project in Java

WebRing: Java List, Open Source Java

Protomatter Free Software
The Protomatter Classes is a collection of (hopefully) useful Open Source Java classes.

Xbeans
XML beans. Component for XML.

Collection of "huge" open source project in Java and other programming language

SourceXchange - Home
If you search for a partime programming job this is the place. SourceXchange offers the trade market for supply and demand of open source projects.

BeOpen.com: The Open Source Applications Portal
Search for open source applications? Look at this search engine!

Giant Java Tree
You'll find many projects in this really giant tree! For example jCVS (Java client for CVS system). Giant Java Tree is an open source project whose primary aim is to
create a Java source tree consisting entirely of open source.

IDE: Integrated Development Environment for Java

NetBeans
The best Java IDE I have ever seen! This is a great open source product.

Open source version control (CVS)

Open Source Version Control Software
Hey this is very important for an open source project. I cannot imagine how the project can work well without a perfect coordination.

Linux area

sourceware.cygnus.com: Free software! Get your fresh hot free software!
Youl'll find many useful open source products here. Most of them are for Linux.

GNU's Not Unix! - the GNU Project and the Free Software Foundation (FSF)
This is the famous GNU!

Open source Java COM bridge

Dan Adler's Java-COM Resources

Open source Consultings

Olliance

Enterprise Integration area

OpenAdaptor
This is a toolkit for back end integration work with lots of support for utilising middleware platforms like JMS and TIBCO.

Open Source Research

Open Source Research Community