ChestLock
Since we have started having larg issues with ChestLock, we are now going to use LWC. See the Commands Page for usage.
This plugin should work alot better than ChestLock, it also works better with doors as well. Everyone will need to use /private on thier existing chests to take ownership. If your chests are in a protected area, WorldGuard overides it, so they should still be safe.