Server-side crossplay plot worlds for Fabric: claims, protection, merging, per-plot biomes and sky - plus a full building kit with paint brushes, shapes, gradients, terraforming and measuring tools. Java + Bedrock via Geyser, zero client mods.
Easy to use GUI with /plot menu
You can build a portal with calsite. Click on it with flent and steel. Then off you go.
You can combine plots to make bigger plots.