Java OPC Browser
Not much documentation at the moment, will get to it...
Maven repo (untested as of yet...):
<repository>
<id>nb_opc_gh</id>
<releases/>
<snapshots/>
<name>OPC Browser GitHub</name>
<url>http://summitsystemsinc.github.com/netbeans-opc-browser/repo/</url>
</repository>
Netbeans update site (worked for me...):
http://summitsystemsinc.github.com/netbeans-opc-browser/netbeans_site/updates.xml