Briar - Secure messaging, anywhere
Fredboat - FredBoat is one of the best online music bots for Discord.
The Serval Mesh - It works by using your phone's Wi-Fi to not communicate with other phones on the same network.
Zandercraft - Zandercraft is an amazing discord bot that includes musical playback and a bunch of other cool features.
WorldChat - Meet new people around the World on WorldChat.tv, the Original World Chat since 2011.
24/7 Discord Bot - 24/7 is a discord bot that lets you play songs on-demand or listen to a radio station all day long without ever having to stop.