JET uses Subversion as the SCM. See Subversion for details and documentation on IDE integration.
WebDav is an access protocol supported by SVN and being http-based is often allowed by corporate firewalls.
svn co http://svn.codehaus.org/jet/trunk jet
svn co https://svn.codehaus.org/jet/trunk jet
This access protocol is available to all, but only developers can commit changes.
Developers require a unix password for Codehaus username. To test https commit access, one may eg:
svn co https://svn.codehaus.org/jet/trunk jet cd jet echo "test" > TEST svn add TEST svn commit --username username --password your-password --message "Testing https"
Note: you only need to specify username and password once per client.