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 * [Dmitriy Samovskiy](http://www.somic.org/2011/09/30/complex-systems-generalists-and-specialists/) - (2011) Complex Systems: Generalists and Specialists | on diagnosing problems
 * [trimstray/test-your-sysadmin-skills](https://github.com/trimstray/test-your-sysadmin-skills) - A collection of *nix Sysadmin Test Questions and Answers for Interview/Exam (2018 Edition).
 * [Gabe Hicks](https://dev9.com/blog-posts/2017/4/6-ways-to-control-cloud-costs) - (2017) 6 Ways to Control Cloud Costs
+* [Nexthink](https://www.nexthink.com/periodic-table/) - Periodic Table of IT Ops Tools
 
 ## Apache
 * [Duncan Crombie](http://www.the-art-of-web.com/system/logs/) - System: Analyzing Apache Log Files