b678_recommended_UUID-update is a release file of the Minecraft plugin ShowCaseStandalone, made for Minecraft 1.7.4. It was published on April 23, 2014 and is 0.4 MB in size. For the full description, screenshots and every other version, visit the ShowCaseStandalone plugin page.
How to install: Put the .jar into the plugins folder of your Paper, Spigot or Bukkit server and restart the server.