Yes. Ender Villages is free to download from Modrinth. Its license is LicenseRef-All-Rights-Reserved.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

Ender Villages — Minecraft Mods

From Modrinth

I have added a new type of village with new villagers in the end with new trades new professions and new structures

Fixed Pumpkin Eye Enchantment to actually fully work now
Fixed bug where End Villagers Who turned into Zombie Villagers had no textures
Fixed Endify Potion not Working on Cats
Added End Armorer Villager
Added End Tool Smith Villager
Added End Tool Smith Table Block and Armorer Table Block
Added End Axe , End Sword, End Shovel, End Pickaxe , End Hoe
Added Pearl Helmet , Pearl Chestplate with Elytra, Pearl leggings , Pearl Boots
While Wearing all Armor when you pearl you get bonus health and speed
Added Obsidian Breaker Enchantment(I/II/III) lets you break Obsidian/Crying Obsidian Much Faster can only get by Trading with Enchanter Villager

-Changed the Brewing Structure to hold the End Brewing Stand Instead of Brewing Stand
-Fixed Farm Spawning in the Ground
-Fixed File Layout
-Fixed Nbt Spawns For Villagers
-Fixed Iron Golems Spawning in village and Replaced with Ender Golem
-Fixed Ender Cat displaying the wrong name
-Added End NitWit Profession
-Added being able to summon End NitWit using Commands
-Added Ender Golem
-Added Ender Golem Spawn Egg
-Added Being able to summon Ender Golem if enough villagers are near each other
-Added Lily of The End Flower on death of Ender Golem
-Added Potion/Splash Potion/Lingering Potion of Teleport I/II (Randomly teleports entity 50/100 blocks)
-Added Potion/Splash Potion/Lingering Potion of Endify I (transforms Villagers or Iron Golems to their End Versions)
-Added Potion/Splash Potion/Lingering Potion of Freeze I/II/III (Will Freeze entity 7sec/13sec/17sec)
-Added New Ender Brewing Profession (Will Trade you the new Potions as they are not brewable)
-Added New End Brewing Stand Block (Gives the End Brewing Profession)
-Added being able to craft the End Brewing Stand out of the Lily of The End Flower

From source data

Supports 17 Minecraft versions, the newest being 1.21.11.

Runs on Fabric, Forge and NeoForge.

Rated a light load on a server.

From the catalog

Listed on Modrinth as “Mods”

Changes or adds to how new terrain, biomes and structures are created.

From source side support

Modrinth lists Ender Villages as required on the server. Check its Modrinth page to see whether players need it too.