Simple clans is a Factions like plugin

features :

1. simple configuration
2. up to 5 clans
3. players can randomly join a clan
4. graphical interface
5. you can start wars with /war
6. super small ram usage compared to other plugins
7. auto team if enabled

note: if there are players that join before adding this plugin you must manually go to the ClansPlugin/playerData/<player name>.txt to change there team