WorldGuard 
This plugin is a port of the popular bukkit plugin called "WorldGuard". It was originally developed by Muqsit, but more flags and extended capabilities were added by me.
Features
- Easily define regions in your world.
- Set custom flags on defined regions that allow/restrict certain actions and events.
- Delete/Modify already defined regions.
- Give special permissions to your players to bypass certain flags. (Usefull for mods, admins, vips, etc.)
Utility
- Defined regions can be used to protect specific areas of your world from griefing, pvp, damaging mobs, building, and some other events.
For the full list of flags check the tutorial.
Tutorial
Read the tutorial. Full permissions list can be found here.
Be sure to check the above link when updating the plugin to see changes and view available flags. (can also be found in-game by doing /rg flags get region_name)
Download
You can download the latest stable compiled plugin from here. If you want more frequent updates you can get the compiled plugin fromhere, however keep in mind that these versions have a higher risk of bugs.
Customizable Permissions
Some flags come with their own permission in order to customize regions even more and only allow certain groups of players do certain actions in a region.