Spyse.com is in-line with shodan and censys IMO.

P.S. This is the best tools repository. Very thanks.

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Add link to Awesome ZSH plugins list

* Add link to Awesome ZSH plugins list
* A couple entries had trailing spaces inconsistent with the rest of the
  document, so trimmed those spaces

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Update README.md

Add Qubes OS to list of operating systems.

Update README.md

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Added machine-learning-algorithms

Add more private search engines to the list

Added: 
- DuckDuckGo
- Swisscows
- Disconnect Search
- MetaGer

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A link to the HTTP response header database.

A curated list of all machine learning algorithms and deep learning algorithms grouped by category.

Add SpaceVim

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