EssentialsX
The essential plugin suite for Paper and Spigot servers.
/editsign command
The `/editsign` command lets you edit each line of a sign, including adding RGB colours to your signs. It even lets you tab-complete the existing content for quick editing!
/warpinfo command
EssentialsX's warp system lets servers create warp points for anyone to teleport to. One of many utility commands, /warpinfo lets you see where warps lead to!
Discord: chat bridge
EssentialsX's Discord addon lets you bridge between in-game chat and chat channels on your Discord server!
Discord: private messages
With EssentialsX Discord, you can also allow your players to send private messages to players from Discord, without needing to log into the server.
Discord: running console commands
EssentialsX Discord even allows admins to run console commands straight from Discord! Not only that, but command responses are wrapped up neatly in a private command response, so you can run server commands without interrupting an ongoing conversation.