zhongwen chrome extension
This is a fantastic extension for Google Chrome. Gives you translations when you hover over Chinese words and characters. Only translates words and not sentences, but this is almost a strength. I'd really like to have a mobile version of this, where you get a popup translation when you touch a word. https://chrome.google.com/webstore/detail/zhongwen-chinese-english/kkmlkkjojmombglmlpbpapmhcaljjkde