demesne-1.14.4-2.3.1-FABRIC.jar is a release file of the Minecraft mod Demesne for Fabric for Fabric, made for Minecraft 1.14.4. It was published on August 10, 2019 and is 1.4 MB in size. For the full description, screenshots and every other version, visit the Demesne for Fabric mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.