Nathan,
For OSGi manifest creation, look at the maven-bundle plugin. Docos can be found here:
http://felix.apache.org/site/apache-felix-maven-bundle-plugin-bnd.html
Another option you can use for local repo management is Sonatype’s Nexus. There is a community edition available. Check it out here:
http://nexus.sonatype.org/
Thanks,
—Jaco