This plugin was made for my small and sometimes crowded hub servers and offers very basic features.

Features:

Hide and show all players with commands.
Hide players by hitting them *Note PVP must be enabled.
Left click while holding a custom item (default is a clock) to hide all online players.
Right click while holding a custom item (default is a clock) to show all online players.
Customize cool-down delay between uses to prevent spamming.
Custom messages given when hiding, showing and when on cooldown.
New permission node to allow players to be ignored when others try to hide or show them.
Custom messages can now include colours. Please use '&' not $ or §

Commands:

/hideall - Hide all online players *Note new players that join or re-connect will be shown.
/showall - Shows all online players that where hidden. *Note except if they are OP.

Permissions:

hideall.hit - Allows players to hide the player they deal damage to. The damage event is cancelled
hideall.show - Allows access to command /showall and the item used
hideall.hide - Allows access to command /hideall and the item used
hideall.ignore - Players with this permission will be ignored when trying to hide or show them.

COMPATIBILITY:
Minecraft Versions 1.3.* to 1.7.* and possibly future Versions.

TODO:

~~Maybe bind the hide and show commands to the left and right click of an item.~~ v0.4
Make the hide players when punched work without PVP enabled.
~~Add config options to customize the messages and cool-down.~~ v0.5
~~Add config option to customize the item held.~~ v0.5
~~Add cool downs~~ v0.4
~~Support colours in custom messages.~~
~~FIX colours in custom messages. (if the first character is a colour the message not save)~~ v0.7

Bold text = New feature or change

HideAll