BotGhost - Create a discord bot without coding
Discord.js - A JavaScript library that enables the ability to code a Discord Bot.
MEE6 - MEE6 is a multipurpose Discord bot with moderation capabilities, leveling, Twitch alerts, and an easy-to-use online dashboard.
Discord Bot Maker - Powerful bot development tool for Discord.
discord.io - A small, single-file, fully featured Discordapp library for Node.js and browsers.
Bot Designer For Discord - Bot Designer For Discord is an application that allows users to build their own bots without any programming.