Google chrome Extensions 
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Wordpress Plugins 
Mozilla Firefox Addons 
Translate current page by using Google Translate. Only one click. Easily switch between translation and original page.
(former Google Dictionary and Google Translate)
In-line dictionary for any word you point to or double-click; whole page translation of any web page in another language.
With Gesture Translate you can translate any text in a webpage just by full circle or zig and zag mouse movements. The translated text will be showed in the status bar
Translate using Google translate service for any language to Persian & any language to English
Select a word on an internet page and translate it with only one mouseclick via Majstro.com. Don't select languages and more, let Majstro.com show you what you need to know and more...
A basic Mozilla Firefox Add-On. Press the Translate button and the current page will open in Google Translate in your chosen language.
Translate words with Google by selecting them. Get a pop up translation. Can be set for user's own language by choosing the Google website for that country.
Transmaker was renamed to Replace Translator. Bug fix and adjustment of feature. Fully Reviewed.
Rewrite the selection in translation.
This jetpack allows you to quickly translate text with Google Translate.
Translate entire web page or selected text using google translate
There are many translators on Firefox. There are two features they're not supported:
1.HTTPS pages
2.Page logined
This addon can translate all pages you can open in firefox
QGTranslate is very helpful if you want to translate shorts texts from the websites or even the full webpage within 1-2 clicks without opening a new tab and without leaving the trust area of Google Translate.
Translate the whole entire page or just a selection using Google Translate.
want to translate a web page with 2 clicks? then this is the addon for you!
(this was written by a 8 year old but it's very good!)
Free Online Translator Toolbar help you to translate whole web page, selected text on web page or text from Clipboard using one of free online translate services. Also you can translate single words using one of free online dictionaries
