Joomla: Joomla! has an official and many unofficial communities. By July 2008, the official Joomla! forum had more than 300,000 threads and over 1.3 million posts from more than 255,000 registered members in 40 languages. Unofficial sites are published in many languages, often with Joomla! extensions that are region specific. Bi-directional text support for the Hebrew and Arabic languages, for example, can be found on 3rd party community portals. Unofficial web developers also build extensions and web templates for commercial sale and offer freelance customization services. Usually extensions (as well as templates) are distributed as a zip file or comparable compressed formats which can be installed using the Joomla! installer.