Looking for a decent cracked FTB server with a mature community and friendly staff? Team-NeO is hosting a Sky Factory 4 server and keeping it pretty much unlocked, while still making a few small changes here and there when needed for stability and player security. Nothing too serious, just enough to keep things running smooth.
This is meant to feel like a proper survival experience, with no annoying plugins getting in the way. You get to learn the mods, progress through the pack, and play it the way it was intended. If you want a more natural modded survival style instead of a heavily managed setup, this is the kind of server to check out.
If you need a cracked launcher or just want to chat with the team, they're also on Join up, have a look around, and see if it's your thing:)