phpwsBB is a native bulletin board module for the phpWebSite content manage system, version 0.9.3-1 or later. It features thread monitoring and administration, including marking threads sticky, locking threads, and forking messages off to new threads.
I finally got around to changing the method of marking threads as locked or sticky. Using newer phpWS 0.9.3 functionaly to change labels on the fly so I don't need to use the ugly kludge of hacking the label and storing it. The update script should be able to fix labels for existing threads.