CSDN列出了很多开源项目，先放在这里还没来得及看.....先存放于些吧！
Linux

http://www.linux.org/

FreeBSD

http://www.freebsd.org/

PostgreSQL

http://www.postgresql.org/

MySQL

http://www.mysql.org/

SAP DB

http://www.sapdb.org/

Hypersonic/Hsql

http://hsqldb.sourceforge.net/

McKoi

http://mckoi.com/database/

Xindice

http://xml.apache.org/xindice/

OJB

http://db.apache.org/ojb/

Hibernate

http://www.hibernate.org/

Castor

http://castor.exolab.org/

Torque

http://db.apache.org/torque/

JORM

http://jorm.objectweb.org/

XMLBeans

http://xml.apache.org/xmlbeans/

JiBX

http://jibx.sourceforge.net/

Castor

http://castor.exolab.org/

JAXB Reference Implementation

http://java.sun.com/xml/jaxb/

JaxMe

http://ws.apache.org/jaxme/

Tomcat

http://jakarta.apache.org/tomcat/

Jetty

http://jetty.mortbay.org/jetty/

JBoss

http://www.jboss.org/

Apache Geronimo

http://incubator.apache.org/projects/geronimo.html

JOnAS

http://jonas.objectweb.org/

OpenEJB

http://openejb.sourceforge.net/

OpenJMS

http://openjms.sourceforge.net/

JORAM

http://joram.objectweb.org/

JOTM

http://jotm.objectweb.org/

Struts

http://jakarta.apache.org/struts/

Cocoon

http://cocoon.apache.org/

Turbine

http://jakarta.apache.org/turbine/

Velocity

http://jakarta.apache.org/velocity/

Tapestry

http://jakarta.apache.org/tapestry/

WebWork

http://opensymphony.com/webwork/

Jetspeed

http://jakarta.apache.org/jetspeed/

Cocoon Portal

http://cocoon.apache.org/

Open For Business (OFBiz)

http://www.ofbiz.org/

Compiere

http://www.compiere.org/

InfoSapient

http://info-sapient.sourceforge.net/

JPOS

http://www.jpos.org/

Mercator

http://www.globalretailtech.com/

Cofax

http://www.cofax.org/

OpenCMS

http://www.opencms.org/opencms/

JasperReports

http://jasperreports.sourceforge.net/

DataVision

http://datavision.sourceforge.net/

JFreeReport

http://www.jfree.org/

JCharts

http://jcharts.sourceforge.net/

iText

http://www.lowagie.com/iText/

Apache FOP

http://xml.apache.org/fop/

POI

http://jakarta.apache.org/poi/

Cron

http://www.linux.org/

JCronTab

http://jcrontab.sourceforge.net/

Quartz

http://www.quartzscheduler.org/

Eclipse

http://www.eclipse.org/

NetBeans

http://www.netbeans.org/

SQuirreL

http://squirrel-sql.sourceforge.net/

TORA

http://www.globecom.se/tora/

DBVisualizer

http://www.minq.se/products/dbvis/

TOAD

http://www.toadsoft.com/

CVS

http://www.cvshome.org/

Subversion

http://subversion.tigris.org/

CVSWeb

http://www.freebsd.org/projects/cvsweb.html

ViewCVS

http://viewcvs.sourceforge.net/

DocBook

http://www.docbook.org/

OpenOffice

http://www.openoffice.org/

Structured Text

http://www.zope.org/Documentation/Articles/STX

MoinMoin Wiki

http://moin.sourceforge.net/

UseMod Wiki

http://www.usemod.com/cgi-bin/wiki.pl?UseModWiki

Jabber



http://www.jabber.org/



Mailman



http://www.gnu.org/software/mailman/



Eclipse Modeling Framework

http://www.eclipse.org/emf/

ArgoUML

http://argouml.tigris.org/

Poseidon Community Edition

http://www.gentleware.com/

XDoclet

http://xdoclet.sourceforge.net/

MiddleGen

http://boss.bekk.no/boss/middlegen/

Jostraca

http://www.jostraca.org/

JUnit

http://www.junit.org/

Cactus

http://jakarta.apache.org/cactus/

JMeter

http://jakarta.apache.org/jmeter/

Grinder

http://grinder.sourceforge.net/

Bugzilla

http://bugzilla.mozilla.org/

Scarab

http://scarab.tigris.org/

JIRA

http://www.atlassian.com/software/jira/

ITracker

http://www.cowsultants.com/

BeanShell

http://www.beanshell.org/

Jython

http://www.jython.org/

JRuby

http://jruby.sourceforge.net/

Groovy

http://groovy.codehaus.org/

AspectJ

http://eclipse.org/aspectj/

Ant

http://ant.apache.org/

Maven

http://maven.apache.org/

AntHill

http://www.urbancode.com/projects/anthill/

CruiseControl

http://cruisecontrol.sourceforge.net/