Hopefully, You will not sue me for presenting these links. Some german lawers do this for a living. The worth of some men are hard to recognize - similar to rats and aids.
I am in now way responsible for (nor able to influence) the contents of those linked pages nor do I necessarily agree with the idees presented there.
dvcs mercurial - a distributed scm, used by sun
dvcs bazaar - another distributed scm, used by ubuntu and others
dvcs git - a distributed scm, used by Linuz
www.cvshome.org - free and well known versioning tool (but outdated)
www.tigris.org - Some nice tools, especially subversion (server and clients), a better cvs
clearcase - expensive scm, I am administrating this scm at work
hudson - a continuous build server
crouse control - another continuous build server (with longer history)
www.apache.org - (ant, log4j, tomcat, xerces, xalan, fop, maven and many others)
www.junit.org - tool for unit testing java code, version 4 is comming..
www.doxygen.org - a better javadoc, generating docs from c++/java source code
JDepend - measuring complexity
JavaNCSS - measuring complexity
JUnitPerf - JUnit addOn. timed and load Your testcases
HTTPUnit - JUnit addOn. Test HTML Frontends over HTTP
www.netbeans.org - open source java ide from sun
www.eclipse.org - open source ide from ibm. This is the one I currently use.
kdevelop - open source c++ ide for kde, qt with linux
www.java.sun.com - home of java
www.javalobby.org - java enthusiasts (many trolls though)
www.theserverside.org - portal about server side programming (many trolls)
www.java-channel.org - new tools for java programmers
www.python.org, this and jython.org gives nice scripting, especially for java environments
www.ruby-lang.org, this and jruby gives nice scripting, especially for java environments
www.rubyonrails.org, the hyped web framework in ruby
rubyeclipse, ide (plugin) for ruby, including debugger
vxwidgets, cross platform c++ gui framework (open source), or use qt..
vmware, cool and realy helpfull virtuall pc environment for (not only) developers
openvpn, very clever vpn implementation
docbook, dokumentation xml schema and dtd
www.sourceforge.net, a powerfull home for many open source projects
www.opensource.org - open source licences
openSUSE - my linux distribution
kubuntu - my other linux distribution
dbox - my linux sat receiver
www.impulsus.de, stuttgart
www.digitalfernsehen.dedigitag tv german
www.regele.org - you are already there