For testing and bug reporting purposes, we usually require the build or revision number of running Alfresco Community installations.
I am sharing this tip since I was unable to find a way to get the build version number neither in the alfresco wars nor Alfresco Share:
1. Go to Alfresco Explorer (http://localhost:8080/alfresco) 2. Click on the Alfresco logo in the top left corner 3. You will get a "About Alfresco" page displaying the version number, just like this: