Maven 资源库介绍（开发包描述）
最近使用maven，才发现自己掌握的java开发包太少啦，于是就将http://www.ibiblio.org/maven/ 的开发包加上了描述。这可花了我三个晚上，也希望大家将自己了解的开发包加进来，让java开发包遍地开花，大家也可就具体开发包谈谈自己使用心得。 也希望斑竹多鼓励啦，壮我java开发人员军威（有这么开发包还怕谁），我们java开发人员有礼啦！
http://www.ibiblio.org/maven/ 开发包描述（可能丢了一点）：
HTTPClient/ a complete http client library http://www.innovation.ch/java/HTTPClient/
aelfred/ A free Java-based XML parser http://mindprod.com/jgloss/aelfred.html
altrmi/ AltRMI is a from-scratch replacement for RMI http://incubator.apache.org/projects/altrmi
ant-contrib/ Useful little Ant tasks http://sourceforge.net/projects/ant-contrib
ant-doxygen/ Useful little Ant tasks http://sourceforge.net/projects/ant-doxygen
ant/ build system http://ant.apache.org/
antlr/ ANother Tool for Language Recognition http://www.antlr.org/
anttex/ TeX Extensions to ANT http://ls10-www.cs.uni-dortmund.de/~alfert/ant-extension/
aptconvert/ convert the APT format to HTML, XHTML, PDF... http://www.xmlmind.com/aptconvert.html
ashkelon/ navigating JavaDoc-like information about classes, members etc. http://sourceforge.net/projects/ashkelon/
asm/ Java bytecode manipulation framework http://asm.objectweb.org/
aspectj/ seamless aspect-oriented extension to java http://www.eclipse.org/aspectj/
avalon/ complete platform for component programming http://avalon.apache.org/
axion/ a small, fast, open source relational database system http://axion.tigris.org/
axis/ implementation of the SOAP http://ws.apache.org/axis/
batik/ based toolkit for svg http://xml.apache.org/batik/
bcel/ Byte Code Engineering Library http://jakarta.apache.org/bcel/
blissed/ Java state-machine framework http://www.sourceforge.net/projects/blissed
bouncycastle/ Crypto package is a Java implementation of cryptographic algorithms http://www.bouncycastle.org/documentation.html
bsf/ Bean Scripting Framework http://jakarta.apache.org/bsf/
bsh/ Lightweight Scripting for Java http://www.beanshell.org/
burlap/ Burlap web service protocol http://www.caucho.com/burlap/
cactus/ simple test framework for unit testing server-side java code http://jakarta.apache.org/cactus/
castor/ open source data binding framework http://castor.exolab.org/
cglib/ powerful, high performance and quality Code Generation Library http://cglib.sourceforge.net/
checkstyle/ check Java code that adheres to a coding standardc http://checkstyle.sourceforge.net/
classworlds/ framework for container developers who require complex manipulation of Java's ClassLoaders http://classworlds.codehaus.org/
clover/ code coverage analysis tool http://www.thecortex.net/clover/
com.walding/ Montage is a web photoalbum http://projects.walding.com/montage/
commons-beanutils/ http://jakarta.apache.org/commons/beanutils.html
commons-betwixt/ an XML introspection mechanism for mapping beans to XML in a flexible way http://jakarta.apache.org/commons/betwixt/index.html
commons-cli/ Command Line Interface http://jakarta.apache.org/commons/cli/index.html
commons-codec/ provides implementations of common encoders and decoders such as Base64, Hex, various phonetic encodings, and URLs http://jakarta.apache.org/commons/codec/index.html
commons-collections/ java Collections API http://jakarta.apache.org/commons/collections.html
commons-configuration/ a project to provide a generic Configuration interface and allow the source of the values to vary. http://jakarta.apache.org/commons/sandbox/configuration/index.html
commons-daemon/ http://jakarta.apache.org/commons/daemon/
commons-dbcp/ connection pool http://jakarta.apache.org/commons/dbcp/
commons-digester/ configure an XML -> Java object mapping module http://jakarta.apache.org/commons/digester.html
commons-discovery/ discovering, or finding, implementations for pluggable interfaces http://jakarta.apache.org/commons/discovery.html
commons-el/ the JSP 2.0 Expression Language Interpreter from Apache. http://jakarta.apache.org/commons/el.html
commons-email/ provide send mail function http://jakarta.apache.org/commons/sandbox/email/
commons-fileupload/ FileUpload package http://jakarta.apache.org/commons/fileupload/index.html
commons-grant/ a small collection of hacks to make using Jakarta Ant in an embedded envinronment much easier. http://jakarta.apache.org/commons/sandbox/grant/
commons-graph/ http://lsd.student.utwente.nl/gump/jakarta-commons-sandbox/commons-graph.html
commons-http/ http://lsd.student.utwente.nl/gump/jakarta-commons-sandbox/commons-http.html
commons-httpclient/ HttpClient to provide the core HTTP functionality http://jakarta.apache.org/commons/httpclient/index.html
commons-io/ package of Java utility classes for java.io's hierarchy http://jakarta.apache.org/commons/sandbox/io/
commons-jdbc2pool/
commons-jelly/ a tool for turning XML into executable code http://jakarta.apache.org/commons/jelly/index.html
commons-jexl/ Jexl is an expression language engine designed for easy embedding in applications and frameworks http://jakarta.apache.org/commons/jexl.html
commons-jux/ A common set of JUnit extensions, largely for test inheritance http://jakarta.apache.org/commons/sandbox/jux/
commons-jxpath/ a simple interpreter of an expression language called XPath http://jakarta.apache.org/commons/jxpath/index.html
commons-lang/ provide enough methods for manipulation of its core classes http://jakarta.apache.org/commons/lang.html
commons-latka/ a functional (end-to-end) testing tool http://jakarta.apache.org/commons/latka/index.html
commons-logging/ log toolkit
commons-messenger/ JMS (Java Message Service) framework which makes it very easy to use JMS in Web Service and Web Application environments. http://jakarta.apache.org/commons/sandbox/messenger/index.html
commons-modeler/ designed to make this process fairly painless -- the required metadata is configured from an XML description of each Model MBean to be supported http://jakarta.apache.org/commons/modeler.html
commons-net/ an Internet protocol suite Java library http://jakarta.apache.org/commons/net/index.html
commons-pool/ Object-pooling API http://jakarta.apache.org/commons/pool/
commons-resources/ providing customized MessageResources implementations that can access resource strings from any desired static or dynamically updated collection http://jakarta.apache.org/commons/sandbox/resources/index.html
commons-sql/ a component for working with databases and generating DDL http://jakarta.apache.org/commons/sandbox/sql/index.html
commons-threadpool/ a component for working with pools of threads and asynchronously executing tasks. http://jakarta.apache.org/commons/sandbox/threadpool/index.html
commons-util/ http://lsd.student.utwente.nl/gump/jakarta-commons-sandbox/commons-util.html
commons-validator/ http://jakarta.apache.org/commons/validator/index.html
commons-vfs/ a single API for accessing various different file systems http://jakarta.apache.org/commons/sandbox/vfs/index.html
commons-xo/ http://lsd.student.utwente.nl/gump/jakarta-commons-sandbox/commons-xo.html
concurrent/ Concurrent Programming in Java http://gee.cs.oswego.edu/dl/cpj/
cornerstone-connection/ provides a facility to listen for incoming socket connections http://avalon.apache.org/components/components/connection.html
cornerstone-datasour..> provides a way to select DataSourceComponent http://avalon.apache.org/components/components/datasource.html
cornerstone-scheduler/ provides a services supporting the scheduling of activities to occur an certain intervals http://avalon.apache.org/components/components/scheduler.html
cornerstone-sockets/ provides a way to lookup a factory for server of client sockets http://avalon.apache.org/components/components/sockets.html
cornerstone-store/ provides a way to store named Objects or Streams without knowing how they are stored http://avalon.apache.org/components/components/store.html
cornerstone-threads/ provides a way get default or named Thread Pool http://avalon.apache.org/components/components/threads.html
crimson/ Crimson is a Java XML parser http://xml.apache.org/crimson/
crossdb/ provide cross database tools for manipulating all major databases http://sourceforge.net/projects/crossdb/
cryptix/ an international volunteer effort to produce robust, open-source cryptographic software libraries http://www.cryptix.org/
dbunit/ JUnit extension targeted for database-driven projects http://dbunit.sourceforge.net/
dnsjava/ an implementation of DNS in Java http://sourceforge.net/projects/dnsjava/
dom4j/ the flexible XML framework for Java http://www.dom4j.org/
drools/ augmented implementation of Forgy's Rete algorithm tailored for the object-oriented language of http://drools.org/
dtdparser/ DTD parsers for Java http://www.wutka.com/dtdparser.html
easymock/ a Java library that provides an easy way to use Mock Objects in unit testing with JUnit. http://sourceforge.net/projects/easymock
eclipse/ a kind of universal tool platform http://www.eclipse.org/
ecs/ enerating elements for various markup languages it directly supports HTML 4.0 and XML http://jakarta.apache.org/ecs/index.html
edenlib/ collection of Java libraries http://edenlib.sourceforge.net/
edtftp/ an entire FTP client library written in Java http://www.enterprisedt.com/downloads/ftp.html
ejb/ enterprise java bean http://java.sun.com/
excalibur/ contains a set of utilitiy projects used in the development of container facilities http://avalon.apache.org/excalibur/index.html
exist/ Open Source XML Database http://exist-db.org/
exml/ a simple, fast and comprehensive Java toolkit for parsing and manipulating XML documents http://www.themindelectric.com/products/
exolabcore/ informal organization working on the development of Open Source enterprise software projects http://www.exolab.org/
exteca/ an ontology-based technology written in Java for high-quality knowledge management and document categorisation http://sourceforge.net/projects/exteca
fastutil/ Small, fast type-specific maps, sets, and lists for Java http://fastutil.dsi.unimi.it/
fesi/ Free EcmaScript Interpreter http://www.lugrin.ch/fesi/javalib.html
findbugs/ A Bug Pattern Detector for Java http://www.cs.umd.edu/~pugh/java/bugs/
flux/ Servlet based framework http://jakarta.apache.org/turbine/
fop/ Formatting Objects Processor http://xml.apache.org/fop/
forehead/ a very small framework to assist in controlling the run-time ClassLoader hierarchy of Java applications http://forehead.werken.com/index.html
formproc/ Web Form Proccesing and Validation http://formproc.sourceforge.net/
foxtrot/ small but powerful framework for using threads with the JavaTM Foundation Classes http://foxtrot.sourceforge.net/
freebxml/ an initiative that aims to foster the development and adoption of ebXML http://www.freebxml.org/
freemarker/ is a "template engine"; a generic tool to generate text output (anything from HTML or RTF to autogenerated source code) based on templates http://freemarker.sourceforge.net/
fulcrum/ uses a proprietary concept of code templates that can be used as "building blocks" to construct efficient Java objects and applications http://www.acceltree.com/products.htm
genjar/ a specialized Ant task that builds jar files based on class dependencies http://sourceforge.net/projects/genjar/
geronimo-spec/ Apache's J2EE project http://www.apache.org/~jstrachan/geronimo/
gnu-regexp/ Regular Expressions for Java http://www.cacas.org/java/gnu/regexp/
graphlayout/ provides a hands-on way to visualize networks of interrelated information http://www.touchgraph.com/index.html
groovy/ Java Genetic Programming http://jgprog.sourceforge.net/
gsbase/ A collection of useful Java classes http://sourceforge.net/projects/genjar/
hessian/ binary web service protocol http://www.caucho.com/hessian/
hibernate/ powerful, ultra-high performance object/relational persistence and query service for Java http://www.hibernate.org/
hsqldb/ a relational database engine written in Java http://sourceforge.net/projects/hsqldb
httpunit/ a Java library for the automatic stimulation and testing of web applications http://sourceforge.net/projects/httpunit
isorelax/ Regular Language description for XML in java http://iso-relax.sourceforge.net/
itext/ generate documents in the Portable Document Format (PDF) and/or HTML. http://sourceforge.net/projects/itext
jacl/ a Tcl implementation in Java http://www.scriptics.com/java
jalopy/ source code formatter for the Sun Java programming language http://jalopy.sourceforge.net/
james/ Java Apache Mail Enterprise Server http://james.apache.org/
jarsync/ a Java implementation of the rsync algorithm http://jarsync.sourceforge.net/
java2html/ java library which converts any given Java component and subcomponent tree into its HTML representation http://sourceforge.net/projects/java2html
javacc/ is a parser/scanner generator for java https://javacc.dev.java.net/
javagroups/ Reliable group communication based on IP multicast and configurable protocol stack http://sourceforge.net/projects/javagroups
javahelp/ a full-featured, platform-independent, extensible help system http://java.sun.com/products/javahelp/
javassist/ (Java Programming Assistant) makes Java bytecode manipulation simple http://www.csg.is.titech.ac.jp/~chiba/javassist/
jaxen/ XPath engine written in Java http://sourceforge.net/projects/jaxen
jaxm/ XML Messaging (JAXM) Optional Package http://java.sun.com/xml/jaxm/
jaxp/ XML Processing http://java.sun.com/xml/jaxp/
jaxrpc/ XML-Based RPC http://java.sun.com/xml/jaxrpc/
jboss/ open source application server http://www.jboss.org/
jca/ J2EE Connector http://java.sun.com/j2ee/connector/
jce/ Java Cryptography Extension http://java.sun.com/products/jce/index.html
jcifs/ Common Internet File System (CIFS) for java http://jcifs.samba.org/
jcommon/ a collection of useful classes used by JFreeChart, JFreeReport and other projects http://www.jfree.org/jcommon/
jcoverage/ gives you the ability to write simple unit-tests for abstract classes (such as EJB 2.0 bean classes), http://jcoverage.com/
jcs/ a distributed caching system written in java for server-side java applications http://jakarta.apache.org/turbine/jcs/
jcvsii/ a CVS client application http://www.ice.com/java/jcvs/
jdbc/ provides cross-DBMS connectivity to a wide range of SQL databases http://java.sun.com/products/jdbc/index.html
jdbm/ a transactional persistence engine for Java http://jdbm.sourceforge.net/
jdepend/ traverses Java class file directories and generates design quality metrics for each Java package http://www.clarkware.com/software/JDepend.html
jdiff/ Javadoc doclet which emits an HTML report of all the packages and so on ,whhich are different (the "diff" part) when two Java APIs are compared http://sourceforge.net/projects/javadiff/
jdom/ Java-based solution for accessing, manipulating, and outputting XML data http://www.jdom.org/
jdring/ Java Alarm Scheduler http://webtools.dyade.fr/jdring/
jetty/ java weber server http://www.sourceforge.net/projects/jetty
jfreechart/ a class library, written in Java, for generating charts http://sourceforge.net/projects/jfreechart
jgen/ Code Generator http://www.etnasoft.com/jgen_introduction.html
jgraph/ the most powerful, lightweight, feature-rich, and thoroughly documented open-source graph component available for Java. http://sourceforge.net/projects/jgraph
jisp/ java indexed serialization package http://www.coyotegulch.com/jisp/index.html
jms/ Java Message Service http://java.sun.com/products/jms/
jndi/ Java Naming and Directory Interface http://java.sun.com/products/jndi/
jsch/ Java Secure Channel http://www.jcraft.com/jsch/
jsse/ Java Secure Socket Extension http://java.sun.com/products/jsse/
jstl/ JavaServer Pages Standard Tag Library http://java.sun.com/products/jsp/jstl/
jstyle/ is an automated Java code review tool http://www.mmsindia.com/jstyle.html
jta/ Java Transaction API Specification http://java.sun.com/products/jta/
jtidy/ a Java port of HTML Tidy, a HTML syntax checker and pretty printer http://sourceforge.net/projects/jtidy
junit-doclet/ JUnitDoclet http://www.junitdoclet.org/
junit/ java unit test http://www.junit.org/
junitperf/ java performance unit test http://www.clarkware.com/software/JUnitPerf.html
jwebunit/ a Java framework that facilitates creation of acceptance tests for web applications http://jwebunit.sourceforge.net/
jython/ an implementation of the high-level, dynamic, object-oriented language Python in java http://jython.sourceforge.net/
kxml/ kvm java xml parser http://kxml.enhydra.org/
kxml2/ kvm java xml parser http://kxml.enhydra.org/
ldapd-common/ LDAPd will be a pure Java LDAP v3 protocol http://ldapd.sourceforge.net/modules/ldapd-common/
ldapsdk/ Netscape Directory SDK for Java http://www.mozilla.org/directory/javasdk.html
log4j/ Inserting log statements into your code http://jakarta.apache.org/log4j/docs/index.html
logkit/ log api http://avalon.apache.org/
lucene/ high-performance, full-featured text search engine written entirely in Java http://jakarta.apache.org/lucene/docs/index.html
maven/ Java project management and project comprehension tool http://maven.apache.org/
maxq/ a web functional testing tool http://maxq.tigris.org/
mckoi/ Mckoi SQL Database written entirely in Java. http://mckoi.com/database/
merlin/ erlin is an advanced component and service management solution that simplifies and enhances component development http://avalon.apache.org/
com.mysql/ mysql jdbc driver http://www.mysql.com/products/connector-j/index.html
mockcreator/ Java Mock Generator http://mockcreator.sourceforge.net/
mockobjects/ a test-first development process for building object-oriented software http://wiki.truemesh.com/mockobjects
msv/ Multi-Schema XML Validator https://msv.dev.java.net/
mule/ a simple yet robust and highly scalable component broker and services framework http://www.cubis.co.uk/mule/
mx4j/ Open Source implementation for the JMXTM technology http://mx4j.sourceforge.net/
mysql/ mysql jdbc driver http://www.mysql.com/products/connector-j/index.html
nanning/ Aspect Frameworks http://nanning.snipsnap.org/space/Nanning
nekohtml/ html parser http://www.apache.org/~andyc/neko/doc/html/
netbeans/ an ide development tool http://www.netbeans.org/
nsuml/ Novosoft metadata framework and uml library http://nsuml.sourceforge.net/
odmg/ Object Data Management Group http://www.odmg.org/
ognl/ Object-Graph Navigation Language http://www.ognl.org/
ojb/ an Object/Relational mapping tool http://db.apache.org/ojb/
openim/ OpenIM Java Jabber Server http://javajabber.net/en/
openjms/ Open Source implementation of Java Message Service Specification http://sourceforge.net/projects/openjms
opensymphony/ Open Source project dedicated to providing enterprise class J2EE applications and components http://sourceforge.net/projects/opensymphony
oro/ a set of text-processing Java classes that provide Perl5 compatible regular expressions http://jakarta.apache.org/oro/
p6spy/ an open source framework for applications that intercept and optionally modify database statements http://www.p6spy.com/
patterntesting/ A new type of automated testing that ensures that development patterns, best practices, architecture design are being correctly implemented http://sourceforge.net/projects/patterntesting
petridish/ workflow systems. http://petridish.werken.com/
piccolo/ is a small, extremely fast XML parser for Java http://piccolo.sourceforge.net/
plexus/ Decouples the behaviour of service from the point in time at which service implementations are configured into an application or system http://plexus.codehaus.org/index.html
pluto-container/ is the Reference Implementation of the Java Portlet Specfication http://jakarta.apache.org/pluto/
pmd/ a Java source code analyzer. http://sourceforge.net/projects/pmd
poi/ Java API To Access Microsoft Format Files http://jakarta.apache.org/poi/index.html
postgresql/ PostgreSQL JDBC Drivers http://jdbc.postgresql.org/
prevayler/ fastest, simplest and most transparent business object persistence, ACID transaction, fault-tolerance, replication and load-balancing architecture http://www.prevayler.org/wiki.jsp
profiler/ an enterprise level all-in-one Java profiler http://www.ej-technologies.com/products/jprofiler/overview.html
pull-parser/ XML Pull Parser http://www.extreme.indiana.edu/xgws/xsoap/xpp/
qdox/ a high speed, small footprint parser for extracting class/interface/method definitions from source files complete with JavaDoc @tags. http://qdox.codehaus.org/
quartz/ Symbian Quartz SDK for Java http://www.symbian.com/developer/techlib/Qdocs/java/navigationpages/SDK_start.html
redhill/ Similarity Analyser) http://www.redhillconsulting.com.au/products/simian/
regexp/ Java Regular Expression package http://jakarta.apache.org/regexp/
relaxngDatatype/ public space for test cases and other ancillary software related to the construction of the RELAX NG language and its implementations. http://sourceforge.net/projects/relaxng
rhino/ open-source implementation of JavaScript written entirely in Java http://www.mozilla.org/rhino/
saaj/ Attachments API for Java http://java.sun.com/xml/saaj/
sax/ Simple API for XML http://www.saxproject.org/
saxon/ The XSLT and XQuery Processor http://saxon.sourceforge.net/
saxpath/ Java API for XPath parsing http://saxpath.org/
servletapi/ servlet api http://java.sun.com/products/servlet/
skaringa/ a framework for Java and XML language binding http://skaringa.sourceforge.net/
skinlf/ Skin Look And Feel http://www.l2fprod.com/
soap/ WebServices http://ws.apache.org/soap/
sshtools/ a suite of Java SSH applications providing a Java SSH API, SSH Terminal, SSH secured VNC client, SFTP client and SSH Daemon http://sourceforge.net/projects/sshtools/
statcvs/ CVS Repository statistic analysis tool http://statcvs.sourceforge.net/
stratum/ Java Caching System http://jakarta.apache.org/turbine/stratum/JavaCachingSystem.html
struts-menu/ Struts Plugin that allows creation of many different menu systems from an XML file. http://struts-menu.sourceforge.net/
struts/ web development framework http://jakarta.apache.org/struts/index.html
strutstestcase/ an extension of the JUnit TestCase class that allows testing of individual Action objects with or without a running servlet engine http://sourceforge.net/projects/strutstestcase
stxx/ Struts for Transforming XML with XSL http://stxx.sourceforge.net/
suiterunner/ A Tool for Conformance and Unit Testing for Java APIs http://www.artima.com/suiterunner/
swt/ The Standard Widget Toolkit http://www.eclipse.org/articles/Article-SWT-Design-1/SWT-Design-1.html
sysunit/ JUnit framework for distributed unit testing http://sysunit.sourceforge.net/
tablelayout/ An Alternative to GridBagLayout http://java.sun.com/products/jfc/tsc/articles/tablelayout/
taglibs/ an open-source repository for JSP custom tag libraries http://jakarta.apache.org/taglibs/index.html
tambora/ considered an enterprise class papiNet enabler http://tambora.zenplex.org/index.html
tapestry/ a powerful, open-source, all-Java framework for creating leading edge web applications in Java. http://jakarta.apache.org/tapestry/index.html
thaiopensource/ a schema language for XML, based on TREX and RELAX. http://www.thaiopensource.com/
tjdo/ an open source implementation of Sun's JDO specification http://tjdo.sourceforge.net/
tomcat-util/ tomcat util package http://jakarta.apache.org/tomcat
tomcat/ web server http://jakarta.apache.org/tomcat
torque/ a persistence layer http://db.apache.org/torque/
touchstone/ A certifying compiler for Java http://raw.cs.berkeley.edu/touchstone.html
turbine/ servlet based framework http://jakarta.apache.org/turbine/index.html
tyrex/ the missing piece in the J2EE puzzle, a J2EE service provider for both Servlet and EJB container http://tyrex.sourceforge.net/
urbanophile/ Java command line option parser http://www.urbanophile.com/arenn/hacking/download.html
vdoclet/ a code-generation framework http://sourceforge.net/projects/vdoclet
velocity/ a Java-based template engine http://jakarta.apache.org/velocity/
velocity-tools/ collection of Velocity subprojects with a common goal of creating tools and infrastructure for building both web and non-web applications using the Velocity template engine. http://jakarta.apache.org/velocity/tools/index.html
village/ a 100% Pure Java API that sits on top of the JDBC API http://www.working-dogs.com/village/
webmacro/ 100% Java open-source template language http://www.webmacro.org/
webtest/ free open source tool for automated testing of web applications. http://webtest.canoo.com/webtest/manual/WebTestHome.html
webwork/ an Open Source project dedicated to providing enterprise class J2EE applications and components http://sourceforge.net/projects/opensymphony
werken-xpath/ XPath-Rec implementation for DOM4J http://sourceforge.net/projects/werken-xpath/
werkflow/ a Java workflow engine built against the blissed state-machine framework and the drools RETE-based rules engine. http://werkflow.codehaus.org/
werkz/ a lightweight framework for goal-oriented processes http://sourceforge.net/projects/werkz
which/ simple environment checking utility for Apache projects http://xml.apache.org/commons/components/which/index.html
wrapper/ Java Service Wrapper http://wrapper.tanukisoftware.org/doc/english/index.html
wsdl4j/ Web Services Description Language for Java Toolkit http://www-124.ibm.com/developerworks/projects/wsdl4j/
xalan/ an XSLT processor for transforming XML documents into HTML, text, or other XML document types http://xml.apache.org/xalan-j/index.html
xdoclet/ a code generation framework http://www.sourceforge.net/projects/xdoclet
xerces/ the next generation of high performance, fully compliant XML parsers http://xml.apache.org/xerces2-j/index.html
xercesjarv/ JARV driver for Xerces-2 http://www.kohsuke.org/jarv/xerces/
xml-apis/ xml-apis http://lsd.student.utwente.nl/gump/xml-commons/xml-apis.html
xml-security/ aimed at providing implementation of security standards for XML http://xml.apache.org/security/index.html
xmlbeans/ is a tool that allows you to access the full power of XML in a Java friendly way http://xml.apache.org/xmlbeans/
xmldb/ Initiative for XML Databases http://www.xmldb.org/
xmlenc/ fast stream-based XML output library for Java http://xmlenc.sourceforge.net/
xmlpull/ Common API for XML Pull Parsing http://www.xmlpull.org/
xmlrpc-helma/ XML-RPC http://xmlrpc.helma.org/
xmlrpc/ a Java implementation of XML-RPC http://ws.apache.org/xmlrpc/
xmlunit/ JUnit and NUnit testing for XML http://xmlunit.sourceforge.net/
xmtp/ A rapidly transformable and portable , XML complients mail transfer protocol - Based on XML, SMTP, & Java http://www.openhealth.org/xmtp/
xom/ a new XML object model http://www.cafeconleche.org/XOM/
xpp3/ XML Pull Parser http://www.extreme.indiana.edu/xgws/xsoap/xpp/
xsdlib/ Sun XML Datatypes Library http://wwws.sun.com/software/xml/developers/xsdlib/