Discord.js - A JavaScript library that enables the ability to code a Discord Bot.
Discord Bot Maker - Powerful bot development tool for Discord.
Eris - A Node.js wrapper for interfacing with Discord.
BotDisco - The most customizable No Code bot for your Discord
BotGhost - Create a discord bot without coding
Discord Bot Studio - Easily create your own custom Discord bots using a friendly user interface, no coding required!