In a neat and tidy matter, block in-game commands based on permissions and/or a whitelist/blacklist.

Sick of plugins that don't let you customise their "no permission" messages? or, maybe you want to add a permission to a command? This is what TidyCommandBlock does. This free plugin allows just that.
To block a command, create a new .yml file inside the plugins/TidyCommandBlock/commands folder. You can use any plain text editor, such as notepad, textedit, or atom.
Then, the file syntax is like so:
command: /somecommand permission: some.permission message: <red>Yikes! You have to be <gold>a donor<red> to do that! whitelist: - some-uuid blacklist: - some-uuid
This plugin sends server your server information, statistics, version, player information, as well as plugin version information to MCStats.org, you can change this in the config.yml file.
TidyCommandBlock adds one administration command /tcb to assist with the whitelist and blacklist.