Useful Java tools

1. anomic FTP server: http://www.anomic.de/AnomicFTPServer: a free FTP server implemented in Java (not an Open Source Tool );

2. Apache activemq: http://activemq.apache.org: an Apache open source Message Broker implementationwith full support for JMS 1.1;

3. Apache Directory Server: http://directory.apache.org: an Apache open source LDAP server written in Java and fully LDAP v3-compliant;

4. Apache directory studio: http://directory.apache.org: an Apache open source LDAP browser written in Java;

5. Apache James: http://james.apache.org/: an Apache open source SMTP, POP3, and NNTP server written in Java;

6. Apache openejb: http://openejb.apache.org/: an Apache open source EJB implementation with support for EJB 3.0, 2.1, 2.0, and 1.1;

7. exist: http://exist.sourceforge.net/: an open source native XML database;

8. HSQLDB: http://www.hsqldb.org/: an open source 100% Java database;

9. mule: http://www.mulesource.org: a Java-based ESB implementation;