Search In DuckDuckGo is a duckduckgo extension for chrome. it's a can_buy extension , it has 212 active users since released its first version, it earns an average rating of 5.00 from 2 rated user, last update is 2956 days ago.
Add option to contextual menu. So you can mark a text, right click on it and search in DuckDuckGO.
You could download the latest version crx file or older version files and install it.
English.
You could find more help information from search in duckduckgo support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of search in duckduckgo.
You could click to report abuse of search in duckduckgo.