KwiClick is a useful free extension for Mozilla Firefox that opens a small floating window that shows search results from sites such as Google, YouTube, FriendFeed, Twitter, Google Maps, Flickr, Wikipedia, Amazon, Technorati, Viddler, Yahoo, del.icio.us, etc. Simply select a word and double click on it to display the results.
KwiClick can be kept at the top of the screen while browsing the internet. In addition, using KwiClick will improve your browsing speed. Finally, another interesting option: when you select an address from a web page, another window that shows the location of the place in Google Earth is opened.
You can free download KwiClick 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.