BMO - BMO is a music Discord bot that offers a wide range of high-quality music, games, memes, and other entertainment.
MEE6 - MEE6 is a multipurpose Discord bot with moderation capabilities, leveling, Twitch alerts, and an easy-to-use online dashboard.
Fredboat - FredBoat is one of the best online music bots for Discord.
Suicide Prevention Bot - Hi! I'm a helpful bot dedicated to helping those who are at risk of suicide. I watch for key words and phrases, and then act accordingly to direct users to help. I'm free, anonnmyous, and easy to install. I'm open source, too!
Vexera - Vexera is a multipurpose Discord bot that is truly something special and can change the way you enjoy your discord server.
YAGPDB - YAGPDB (Yet Another General Purpose Discord Bot) is an advanced configurable Discord bot providing a load of features for help with managing a server.