Jericho is a Java-based weblogging tool which interfaces with the Blogger and Manila XML-RPC interface. With the latest release, Jericho can now post to either Blogger sites or Manila sites. Also, Jericho can be used as a library for integration with other apps.
The Sourceforge project page is located here. Pretty much everything can be found there.
There are three mailing lists for Jericho. Info on them can be found here along with information about how to subscribe/unsubscribe.
To view the latest releases, see this page.
The latest release is 0.7.
As with all SF projects, a CVS tree is avaiable and I welcome any additional folk who would like to write code.