Gregworks is a modded Minecraft server running a civilization event on 1.7.10. The vibe is semi anarchy and it sounds like things can get pretty chaotic.
The main focus is GregTech so you will be building big tech progress and heavy factories. There is space travel with Galacticraft and GalaxySpace and there are more places to explore like Twilight Forest and Atum.
Automation is a big deal here with mods like ProjectRed and BluePower and you can run your base with OpenComputers. There is also a lot of breeding and upgrades with Forestry Binnies and Gendustry.
For fighting there are weapons and missile mods so players can go to war. The only real rule is no cheating or exploiting so it is wild but still meant to be fair.
Gregworks 1.7.10 Semi Anarchy Tech War

GG.MINEWIND.NET New Server IPCreate Mod Nations and Sky Machines

I found a new modded SMP that is trying to be a mix of different play styles. You can go solo or team up and build a nation. There is a war idea for later but right now wars are not allowed since the server is still new and sorting rules.
The big focus is the Create mod with lots of addons so people can make huge farms and crazy automation. The only real limit is when your builds start making the server lag so they are keeping the modpack smaller to handle big projects.
It also has Valkyrian Skies and Eureka so you can build tanks and airplanes and boats. The rules are still getting made but for now do not use nukes and do not be an A hole.
GG.MINEWIND.NET New Server IPRelaxed Modded Tech SMP With Voice Chat

This is a relaxed modded SMP called L&M Industries. It feels like a chill place for people who want tech mods without a bunch of drama.
The modpack mixes Create with Modern Industrialization plus ComputerCraft and AE2 so you can build machines make factories and set up big storage systems. There are also lots of decoration mods so your base can look super detailed with stuff like workshop style blocks and tiny block building.
The community is small and friendly and they try to keep things simple and enjoyable. They also use Plasmo Voice Chat so talking in game feels more alive and connected.
GG.MINEWIND.NET New Server IPLM Industries Fully Modded Tech SMP

LM Industries is a fully modded SMP that feels really relaxed and chill. It mixes a bunch of tech mods like Create Modern Industrialization ComputerCraft and AE2 and they all work together in a really cool way.
The server also has a lot of decoration mods so you can make your base look amazing and really detailed. It feels like a place where you can grind on big factory builds or just make a cozy home and hang out.
The community is small and friendly and the whole server is about keeping things simple and fun. People just play and enjoy the game without a lot of drama.
They use Plasmo Voice Chat so you can actually talk to people in game and the world feels a lot more alive when you run into someone.
There are even more extra mods like Chisel and Bits Extended Waystones and Building Wands so traveling building and shaping blocks is way easier and more fun.
Right now there is a big Christmas event going on so if you like winter stuff and events this is a good time to join.
GG.MINEWIND.NET New Server IP
