DuckDuckGoogle von Jeroen Swen

DuckDuckGoogle?
It adds a 'Google it' button on the DuckDuckGo.com search engine result pages. Pressing this button opens a new tab with a Google search for your searched query. See the screenshot for an example.

Why would I need this?
Personal preference.
While DuckDuckGo is an amazing search engine that I recommend to everyone, sometimes it does not find what I'm looking for. Manually copy/pasting my search queries into Google wasn't really efficient so I replaced it with a single mouse-click.

Does it do anything else?
It also adds the 'noopener', 'nofollow' and 'noreferrer' attributes to the hyperlink so that Google at least won't know where you came from.

Where can I find the source code?
I will be adding a GitHub repository link in the near future, but for now you can simply right-click the install button and save the .XPI file which is actually a ZIP-file. Unzip it, and you have the source!
Manually unpacking the .XPI file is actually "safer" when you want to review plugins source code as a link to source code on another website does not guarantee that that code will be in the plugin you are installing.