We host client websites, however sometimes a client may want to take their website and go elsewhere, so it's easier for them to not worry about where their site

We host client websites, however sometimes a client may want to take their website and go elsewhere, so it's easier for them to not worry about where their site can run as pretty much any admin can get PHP working. Sure I would love to expand work into other languages, but for the short term it's PHP (symfony2/drupal) for us. :-(