Why not? Assist's custom Valnet library is obfuscated, meaning you can't add new agents or fix bugs if the software is outdated! The only thing open-source is the front-end! Assist Remake (in short, Assistr) solves this problem by hiding absolutely nothing because im absolute shei at coding. Feel free to contribute to this repo as much as you wish :D
Well, we have ValAPI.Net & DiscordRichPresence