Global Translator Pro for Wordpress
Global Translator Pro is a very good translation script for Wordpress.
It has a free version, and also $69 and $129 options with support.
Google Translation for Joom!Fish
Google Translation for Joom!Fish is a plugin which adds semi-automated translation functionality to Joom!Fish.
Joom!Fish is a translation management extension for Joomla.
This plugin costs $15, $5 of which is then contributed to the Joom!Fish project.
GTranslate, by Edvard Ananyan, is a Joomla plugin that provides automated full-page translations.
There is a free version and an $80 "Pro" version.
[ame="http://www.vbulletin.org/forum/showthread.php?t=217329"]vB Global Translator for vBulletin[/ame]
davesnake has created a translation script for vBulletin.
This plugin is available at no cost.
[ame="http://www.vbulletin.org/forum/showthread.php?t=220886"]vB Enterprise Translator[/ame]
vBulletin mod to translate your forum to 43 languages.
davesnake is using WebSitesTranslator.
It's $65, but it supports any type of web site.
What other translation scripts are worth recommending?