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/documentation/overview.md

https://github.com/a-West/duckduckgo
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  1. # Type Overview
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  2. [Index](https://github.com/duckduckgo/duckduckgo#index) / **Type Overview**
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  3. 

  4. ---
    5. 

  5. 

  6. There are currently four types of DuckDuckGo plugins:
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  7. 

  8. ### Goodies — calculations and cheat sheets.
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  9. 

  10.  * Examples: [reverse](https://duckduckgo.com/?q=reverse+test), [private ips](https://duckduckgo.com/?q=private+ip), [dice](https://duckduckgo.com/?q=throw+5+dice), [roman](https://duckduckgo.com/?q=roman+cvi), [passphrase](https://duckduckgo.com/?q=passphrase+4+words), [etc.](https://github.com/duckduckgo/zeroclickinfo-goodies/tree/master/lib/DDG/Goodie)
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  11.  * Status: v1!
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  12.  * Language: Perl
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  13.  * Involves: processing the search query.
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  14. 

  15. ### Spice — external API calls.
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  16. 

  17.  * Examples: [xkcd](https://duckduckgo.com/?q=xkcd), [alternative to](https://duckduckgo.com/?q=alternative+to+picasa), [twitter](https://duckduckgo.com/?q=%40duckduckgo), [wordnik](https://duckduckgo.com/?q=random+word+3-5), [expatistan](https://duckduckgo.com/?q=cost+of+living+nyc+philadelphia), [etc.](https://github.com/duckduckgo/zeroclickinfo-spice/tree/master/lib/DDG/Spice)
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  18.  * Status: v1 release candidate
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  19.  * Language: JavaScript
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  20.  * Involves: processing data from APIs.
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  21. 

  22. ### Fathead — keyword databases.
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  23. 

  24.  * Examples: [git](https://duckduckgo.com/?q=git+branch), [perl](https://duckduckgo.com/?q=perl+split), [final fantasy](http://duckduckgo.com/?q=gippal), [emoticons](http://duckduckgo.com/?q=%28%3E_%3C%29), [http](http://duckduckgo.com/?q=http+304), [etc.](https://github.com/duckduckgo/zeroclickinfo-fathead)
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  25.  * Status: alpha
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  26.  * Languages: Perl, Node, Ruby, Python (maybe others)
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  27.  * Involves: generating information about specific queries.
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  28. 

  29. ### Longtail — full-text data.
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  30. 

  31.  * Examples: [wikipedia](https://duckduckgo.com/?q=snow+albedo), [lyrics](https://duckduckgo.com/?q=what%27s+my+age+again+lyrics), [stack overflow](https://duckduckgo.com/?q=nginx+apache), [etc.](https://github.com/duckduckgo/zeroclickinfo-longtail)
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  32.  * Status: alpha
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  33.  * Languages: Perl, Node, Ruby, Python (maybe others)
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  34.  * Involves: formatting data sets to answer general queries.
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