ATLauncher/discord-bot
Their github has all the info you need
TheBastionBot/Bastion
Give awesome perks to your Discord server!
corpnewt/CorpBot.py A very clumsy python bot for discord
discord.js
A generic discord.js egg for running discord bots.
discord.py
A generic discord.py egg for running discord bots.
discordgo A generic go application egg.
fragforce/fragbot
The bot that runs as the fragforce @Fragbot offering looking-for-group services for now
jagrosh/MusicBot
A Discord music bot that's easy to set up and run yourself!
parkervcp/parkertron
The bot that runs as the pterodactyl @Support Bot
possatti/pixelbot
No longer actively developed.
Was used to test python services.
Cog-Creators/Red-DiscordBot A multifunction Discord bot
SinusBot
Please Check their site for an in depth on the bot.