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 * [**Nim**: _Writing a Link Checker_](https://xmonader.github.io/nimdays/day4_asynclinkschecker.html#cid10)
 * [**Nim**: _Writing a URL Shortening Service_](https://xmonader.github.io/nimdays/day7_shorturl.html#cid20)
 * [**Node.js**: _Build a static site generator in 40 lines with Node.js_](https://medium.com/douglas-matoso-english/build-static-site-generator-nodejs-8969ebe34b22)
+* [**Node.js**: _Building A Simple Single Sign On(SSO) Server And Solution From Scratch In Node.js._](https://codeburst.io/building-a-simple-single-sign-on-sso-server-and-solution-from-scratch-in-node-js-ea6ee5fdf340)
 * [**PHP**: _Write your own MVC from scratch in PHP_ ](https://chaitya62.github.io/2018/04/29/Writing-your-own-MVC-from-Scratch-in-PHP.html)
 * [**PHP**: _Make your own blog_](https://ilovephp.jondh.me.uk/en/tutorial/make-your-own-blog)
 * [**Python**: _Build a Deep Learning Library_](https://www.youtube.com/watch?v=o64FV-ez6Gw) [video]