What's the difference between "Software/Coding" and "Plugins/Code" forums? I hope this one is the right choice for the next question What are CCG and other known servers using? Bukkit? Spigot? Forge?
Software and Coding = Websites, software packages and suggesting websites/software Plugins/Code = Suggesting and asking for good plugins, and coding plugins such as with Java Cubecraft and most big minecraft servers use BungeeCord/Spigot. Forge is mostly only for modded servers.
Thank you very much for your answer. Since the question was about coding, I should I have used the other forum, the one that has no "coding" in the title BungeeCord seems like a reverse proxy to create a hub, so what I was looking for is Spigot. I'd like to take a look at SCB code and I found a version for Spigot, though I'm afraid CCG most likely use a custom private version.