DuckDuckLib автор CouldBeThis

A Firefox extension that allows the user to search DuckDuckGo in a way which is identical to the usual DuckDuckGo search with two exceptions:

1. "Safe search" is disabled. This is the main point of the extension. There will be one less algorithm deciding for you what is appropriate viewing.
   Of course you may always use the Safe Search page or change the settings on a per-search basis if for some reason you want this function. Read about safe search.
2. Region-specific results are disabled. Can be enabled on a per-search basis. Read about regional search.

You do not need this extension to accomplish either of these goals. It is merely a convenience.