Slo

Once a world is given to Slo, the mod starts a server JAR for it, listens to the server output and connects to localhost when the server is ready. Slo automates the steps that normally need a terminal: it detects server JAR files, accepts the EULA, and makes the server saves directory visible during world selection. A server console can be opened inside the game, which is the default setting.

Slo integrates with Minecraft's own interface, so the server controls appear where the game already shows its menus. If something goes wrong, the player is disconnected and the server process exits gracefully. The mod is useful for developing a server, where running the machine locally and connecting to it is common practice. Fabric API is required, and the mod needs a live internet connection for the first launch of a new server, when its game files are fetched.