Leo Translate oleh Mikhail Donskoy

Browser extension for Firefox, Firefox for Android, and Chrome browsers that translates words from English to Russian on Internet pages using LinguaLeo API and adds words to the LinguaLeo Dictionary.

Support

You can watch the news of the extension or ask question on it's official page in vk.com: https://vk.com/leo_translate

Contribution
You can report about bugs or send pull request in github repository of the extension: https://github.com/mdnsk/leo-translate