mailxel relies on the following components (all open source, too):
- GWT, http://code.google.com/webtoolkit
- sqlite-jdbc, http://www.xerial.org/trac/Xerial/wiki/SQLiteJDBC
- and thus on sqlite itself, http://www.sqlite.org
- Java Mail API, http://java.sun.com/products/javamail
- winstone servlet container, http://winstone.sourceforge.net
- and fugue-icons, http://fugue-icons.googlecode.com