Great video with all the current features by IngrownPenguin (VariationVault). You should subscribe!
WELCOME TO HOLOPOPUP!
HOLOPopup is a very lightweight (a little under 200 lines!) plugin that utilizes horse nametags to create floating holograms. It uses no dependencies to create nametags, and is totally lag-free! You do, though, need Vault if you would like to use economy support.
WHAT'S IT DO?
This plugin allows you to set a custom message to pop up when a player kills a mob or another player, with multi lines, variables, and colors. The config file is very simple to use, with commented step-by-step configuration.
This plugin includes economy integration, and you can set mob/player rewards on kill for each mob/player. You can disable this by setting Reward: to 0!
METRICS
This plugin utilises Hidendra's plugin metrics system, which means that the following information is collected and sent to mcstats.org:
A unique identifier
The server's version of Java
Whether the server is in offline or online mode
The plugin's version
The server's version
The OS version/name and architecture
The core count for the CPU
The number of players online
The Metrics version
Opting out of this service can be done by editing plugins/Plugin Metrics/config.yml and changing opt-out to true.
Metrics help me as a developer continue to add support for the versions my users are running and help me gague the use of the plugin.