Joomla!
Joomla! 1.0: mod_gtranslate1.0.x.14.zip
Joomla! 1.5: mod_gtranslate1.5.x.33.zip
Joomla! 1.6 & 1.7: mod_gtranslate1.6.x.33.zip
Joomla! 2.5: mod_gtranslate.3.7.6.zip
Joomla! 3, 4+: mod_gtranslate.4.0.2.zip
Please check the Joomla Module Documentation.
Drupal
Get the module from: Translate Drupal
Please check the Drupal Module Documentation.
WordPress
Get the plugin from: Translate WordPress
Please check the WordPress Plugin Documentation.
Shopify
Install the app from: Translate Shopify
Please check the Shopify App Documentation.
Other HTML
Configure and get the HTML code from: Website Translator Widget