1. DiscorddjDiscord DJ Bot. Play music in your server. Inspired by PlugDJ
2. MinimalftpA lightweight, simple FTP server. Pure Java, no dependencies.
3. node-chiptuneConvert tracker music to PCM streams in Node.js (libopenmpt bindings)
5. BOHAA Forge/LiteLoader/Vanilla/Bukkit/Sponge/BungeeCord plugin that blocks hacked accounts (McLeaks free accounts)