Update README.md

README.md

@@ -14,12 +14,15 @@ It's a great way to learn.
 * [Blockchain / Cryptocurrency](#build-your-own-blockchain--cryptocurrency)
 * [Bot](#build-your-own-bot)
 * [Command-Line Tool](#build-your-own-command-line-tool)
+* [Compiler](#build-your-own-compiler)
 * [Database](#build-your-own-database)
 * [Docker](#build-your-own-docker)
 * [Emulator / Virtual Machine](#build-your-own-emulator--virtual-machine)
 * [Front-end Framework / Library](#build-your-own-front-end-framework--library)
 * [Game](#build-your-own-game)
 * [Git](#build-your-own-git)
+* [Graphics](#build-your-own-graphics)
+* [Machine Learning](#build-your-own-machine-learning)
 * [Network Stack](#build-your-own-network-stack)
 * [Neural Network](#build-your-own-neural-network)
 * [Operating System](#build-your-own-operating-system)
@@ -27,14 +30,17 @@ It's a great way to learn.
 * [Programming Language](#build-your-own-programming-language)
 * [Regex Engine](#build-your-own-regex-engine)
 * [Search Engine](#build-your-own-search-engine)
+* [Security](#build-your-own-security)
 * [Shell](#build-your-own-shell)
 * [Template Engine](#build-your-own-template-engine)
 * [Text Editor](#build-your-own-text-editor)
+* [Tools](#build-your-own-tools)
+* [User Interface](#build-your-own-user-interface)
+* [Video Processing](#build-your-own-video-processing)
 * [Visual Recognition System](#build-your-own-visual-recognition-system)
 * [Voxel Engine](#build-your-own-voxel-engine)
 * [Web Browser](#build-your-own-web-browser)
 * [Web Server](#build-your-own-web-server)
-* [Uncategorized](#uncategorized)
 
 ## Tutorials
 
@@ -94,7 +100,6 @@ It's a great way to learn.
 * [**TypeScript**: _NaivecoinStake: a tutorial for building a cryptocurrency with the Proof of Stake consensus_](https://naivecoinstake.learn.uno/)
 * [**Rust**: _Building A Blockchain in Rust & Substrate_](https://hackernoon.com/building-a-blockchain-in-rust-and-substrate-a-step-by-step-guide-for-developers-kc223ybp)
 
-
 #### Build your own `Bot`
 
 * [**Haskell**: _Roll your own IRC bot_](https://wiki.haskell.org/Roll_your_own_IRC_bot)
@@ -124,6 +129,17 @@ It's a great way to learn.
 * [**Rust**: _Command line apps in Rust_](https://rust-cli.github.io/book/index.html)
 * [**Rust**: _Writing a Command Line Tool in Rust_](https://mattgathu.dev/2017/08/29/writing-cli-app-rust.html)
 
+#### Build your own `Compiler`
+
+* [**C**: _A C & x86 version of the "Let's Build a Compiler" by Jack Crenshaw_](https://github.com/lotabout/Let-s-build-a-compiler)
+* [**C**: _A journey explaining how to build a compiler from scratch_](https://github.com/DoctorWkt/acwj)
+* [**C++**: _Writing Your Own Toy Compiler Using Flex_](https://gnuu.org/2009/09/18/writing-your-own-toy-compiler/)
+* [**C++**: _How to Create a Compiler_](https://www.youtube.com/watch?v=eF9qWbuQLuw) [video]
+* [**OCaml**: _Writing a C Compiler_](https://norasandler.com/2017/11/29/Write-a-Compiler.html)
+* [**Pascal**: _Let's Build a Compiler_](https://compilers.iecc.com/crenshaw/)
+* [**Python**: _From Source Code To Machine Code: Build Your Own Compiler From Scratch_](https://build-your-own.org/compiler/)
+* [**Ruby**: _A Compiler From Scratch_](https://www.destroyallsoftware.com/screencasts/catalog/a-compiler-from-scratch)
+* [**TypeScript**: _Build your own WebAssembly Compiler_](https://blog.scottlogic.com/2019/05/17/webassembly-compiler.html)
 
 #### Build your own `Database`
 
@@ -230,6 +246,16 @@ It's a great way to learn.
 * [**Python**: _ugit: Learn Git Internals by Building Git Yourself_](https://www.leshenko.net/p/ugit/)
 * [**Ruby**: _Rebuilding Git in Ruby_](https://robots.thoughtbot.com/rebuilding-git-in-ruby)
 
+#### Build your own `Graphics`
+
+* [**JavaScript**: _Computer Graphics from scratch_](http://www.gabrielgambetta.com/computer-graphics-from-scratch/introduction.html)
+* [**Rust**: _WebGL + Rust: Basic Water Tutorial_](https://www.chinedufn.com/3d-webgl-basic-water-tutorial/)
+
+#### Build your own `Machine Learning`
+
+* [**Python**: _Build a Deep Learning Library_](https://www.youtube.com/watch?v=o64FV-ez6Gw) [video]
+* [**Python**: _Learn ML Algorithms by coding: Decision Trees_](https://lethalbrains.com/learn-ml-algorithms-by-coding-decision-trees-439ac503c9a4)
+
 #### Build your own `Network Stack`
 
 * [**C**: _Beej's Guide to Network Programming_](http://beej.us/guide/bgnet/)
@@ -294,12 +320,7 @@ It's a great way to learn.
 * [**C**: _Build Your Own Lisp: Learn C and build your own programming language in 1000 lines of code_](http://www.buildyourownlisp.com/)
 * [**C**: _Writing a Simple Garbage Collector in C_](http://maplant.com/gc.html)
 * [**C**: _C interpreter that interprets itself._](https://github.com/lotabout/write-a-C-interpreter)
-* [**C**: _A C & x86 version of the "Let's Build a Compiler" by Jack Crenshaw_](https://github.com/lotabout/Let-s-build-a-compiler)
-* [**C**: _A journey explaining how to build a compiler from scratch_](https://github.com/DoctorWkt/acwj)
-* [**C++**: _Writing Your Own Toy Compiler Using Flex_](https://gnuu.org/2009/09/18/writing-your-own-toy-compiler/)
-* [**C++**: _How to Create a Compiler_](https://www.youtube.com/watch?v=eF9qWbuQLuw) [video]
 * [**C++**: _Kaleidoscope: Implementing a Language with LLVM_](https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/index.html)
-* [**F#**: _Understanding Parser Combinators_](https://fsharpforfunandprofit.com/posts/understanding-parser-combinators/)
 * [**Elixir**: _Demystifying compilers by writing your own_](https://www.youtube.com/watch?v=zMJYoYwOCd4) [video]
 * [**Go**: _The Super Tiny Compiler_](https://github.com/hazbo/the-super-tiny-compiler)
 * [**Go**: _Lexical Scanning in Go_](https://www.youtube.com/watch?v=HxaD_trXwRE) [video]
@@ -314,22 +335,15 @@ It's a great way to learn.
 * [**JavaScript**: _Little Lisp interpreter_](https://maryrosecook.com/blog/post/little-lisp-interpreter)
 * [**JavaScript**: _How to implement a programming language in JavaScript_](http://lisperator.net/pltut/)
 * [**JavaScript**: _Let’s go write a Lisp_](https://idiocy.org/lets-go-write-a-lisp/part-1.html)
-* [**OCaml**: _Writing a C Compiler_](https://norasandler.com/2017/11/29/Write-a-Compiler.html)
 * [**OCaml**: _Writing a Lisp, the series_](https://bernsteinbear.com/blog/lisp/)
-* [**Pascal**: _Let's Build a Compiler_](https://compilers.iecc.com/crenshaw/)
 * [**Python**: _A Python Interpreter Written in Python_](http://aosabook.org/en/500L/a-python-interpreter-written-in-python.html)
 * [**Python**: _lisp.py: Make your own Lisp interpreter_](http://khamidou.com/compilers/lisp.py/)
 * [**Python**: _How to Write a Lisp Interpreter in Python_](http://norvig.com/lispy.html)
 * [**Python**: _Let’s Build A Simple Interpreter_](https://ruslanspivak.com/lsbasi-part1/)
 * [**Python**: _Make Your Own Simple Interpreted Programming Language_](https://www.youtube.com/watch?v=dj9CBS3ikGA&list=PLZQftyCk7_SdoVexSmwy_tBgs7P0b97yD&index=1) [video]
-* [**Python**: _From Source Code To Machine Code: Build Your Own Compiler From Scratch_](https://build-your-own.org/compiler/)
 * [**Racket**: _Beautiful Racket: How to make your own programming languages with Racket_](https://beautifulracket.com/)
-* [**Ruby**: _A Compiler From Scratch_](https://www.destroyallsoftware.com/screencasts/catalog/a-compiler-from-scratch)
-* [**Ruby**: _Markdown compiler from scratch in Ruby_](https://blog.beezwax.net/2017/07/07/writing-a-markdown-compiler/)
 * [**Rust**: _So You Want to Build a Language VM_](https://blog.subnetzero.io/post/building-language-vm-part-00/)
-* [**Rust**: _Learning Parser Combinators With Rust_](https://bodil.lol/parser-combinators/)
 * [**Swift**: _Building a LISP from scratch with Swift_](https://www.uraimo.com/2017/02/05/building-a-lisp-from-scratch-with-swift/)
-* [**TypeScript**: _Build your own WebAssembly Compiler_](https://blog.scottlogic.com/2019/05/17/webassembly-compiler.html)
 
 #### Build your own `Regex Engine`
 
@@ -351,6 +365,13 @@ It's a great way to learn.
 * [**Python**: _Building A Python-Based Search Engine_](https://www.youtube.com/watch?v=cY7pE7vX6MU) [video]
 * [**Python**: _Making text search learn from feedback_](https://medium.com/filament-ai/making-text-search-learn-from-feedback-4fe210fd87b0)
 * [**Python**: _Finding Important Words in Text Using TF-IDF_](https://stevenloria.com/tf-idf/)
+* [**PHP**: _Code a Web Search Engine in PHP_](https://boyter.org/2013/01/code-for-a-search-engine-in-php-part-1/)
+
+#### Build your own `Security`
+
+* [**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)
+* [**Python**: _Write SMS-spam detector with Scikit-learn_](https://medium.com/@kopilov.vlad/detect-sms-spam-in-kaggle-with-scikit-learn-5f6afa7a3ca2)
+* [**JavaScript**: _Build Your Own AdBlocker in (Literally) 10 Minutes_](https://levelup.gitconnected.com/building-your-own-adblocker-in-literally-10-minutes-1eec093b04cd)
 
 #### Build your own `Shell`
 
@@ -379,6 +400,26 @@ It's a great way to learn.
 * [**Ruby**: _Build a Collaborative Text Editor Using Rails_](https://blog.aha.io/text-editor/)
 * [**Rust**: _Hecto: Build your own text editor in Rust_ ](https://www.flenker.blog/hecto/)
 
+#### Build your own `Tools`
+
+* [**Nim**: _Writing a Build system_](https://xmonader.github.io/nimdays/day11_buildsystem.html)
+* [**Nim**: _Writing a MiniTest Framework_](https://xmonader.github.io/nimdays/day08_minitest.html)
+* [**Python**: _Continuous Integration System_](http://aosabook.org/en/500L/a-continuous-integration-system.html)
+* [**TypeScript**: _Tiny Package Manager: Learns how npm or Yarn works_](https://github.com/g-plane/tiny-package-manager)
+* [**Python**: _Build your own Git plugin with python_](https://joshburns-xyz.vercel.app/posts/build-your-own-git-plugin)
+
+#### Build your own `User Interface`
+
+* [**C**: _The very basics of a terminal emulator_](https://www.uninformativ.de/blog/postings/2018-02-24/0/POSTING-en.html)
+* [**C++**: _How X Window Managers work and how to write one_](https://seasonofcode.com/posts/how-x-window-managers-work-and-how-to-write-one-part-i.html)
+* [**Go**: _Build A Simple Terminal Emulator In 100 Lines of Golang_](https://ishuah.com/2021/03/10/build-a-terminal-emulator-in-100-lines-of-go/)
+* [**Ruby**: _Creating a Linux Desktop application with Ruby_](https://iridakos.com/tutorials/2018/01/25/creating-a-gtk-todo-application-with-ruby)
+
+#### Build your own `Video Processing`
+
+* [**C**: _How to Write a Video Player in Less Than 1000 Lines_](http://dranger.com/ffmpeg/ffmpeg.html)
+* [**Go**: _Video Encoding from Scratch_](https://github.com/kevmo314/codec-from-scratch)
+
 #### Build your own `Visual Recognition System`
 
 * [**Python**: _Developing a License Plate Recognition System with Machine Learning in Python_](https://blog.devcenter.co/developing-a-license-plate-recognition-system-with-machine-learning-in-python-787833569ccd)
@@ -408,70 +449,6 @@ It's a great way to learn.
 * [**Python**: _Implementing a RESTful Web API with Python & Flask_](http://blog.luisrei.com/articles/flaskrest.html)
 * [**Ruby**: _Building a simple websockets server from scratch in Ruby_](http://blog.honeybadger.io/building-a-simple-websockets-server-from-scratch-in-ruby/)
 
-#### Uncategorized
-
-* [**(any)**: _From NAND to Tetris: Building a Modern Computer From First Principles_](http://nand2tetris.org/)
-* [**Alloy**: _The Same-Origin Policy_](http://aosabook.org/en/500L/the-same-origin-policy.html)
-* [**C**: _How to Write a Video Player in Less Than 1000 Lines_](http://dranger.com/ffmpeg/ffmpeg.html)
-* [**C**: _Learn how to write a hash table in C_](https://github.com/jamesroutley/write-a-hash-table)
-* [**C**: _The very basics of a terminal emulator_](https://www.uninformativ.de/blog/postings/2018-02-24/0/POSTING-en.html)
-* [**C**: _Write a System Call_](https://brennan.io/2016/11/14/kernel-dev-ep3/)
-* [**C**: _Sol - An MQTT broker from scratch_](https://codepr.github.io/posts/sol-mqtt-broker)
-* [**C++**: _Build your own VR headset for $200_](https://github.com/relativty/Relativ)
-* [**C++**: _How X Window Managers work and how to write one_](https://seasonofcode.com/posts/how-x-window-managers-work-and-how-to-write-one-part-i.html)
-* [**C++**: _Writing a Linux Debugger_](https://blog.tartanllama.xyz/writing-a-linux-debugger-setup/)
-* [**C++**: _How a 64k intro is made_](http://www.lofibucket.com/articles/64k_intro.html)
-* [**C++**: _Make your own Game Engine_](https://www.youtube.com/playlist?list=PLlrATfBNZ98dC-V-N3m0Go4deliWHPFwT)
-* [**C#**: _C# Networking: Create a TCP chater server, TCP games, UDP Pong and more_](https://16bpp.net/tutorials/csharp-networking)
-* [**C#**: _Loading and rendering 3D skeletal animations from scratch in C# and GLSL_](https://www.seanjoflynn.com/research/skeletal-animation.html)
-* [**Clojure**: _Building a spell-checker_](https://bernhardwenzel.com/articles/clojure-spellchecker/)
-* [**Go**: _Build A Simple Terminal Emulator In 100 Lines of Golang_](https://ishuah.com/2021/03/10/build-a-terminal-emulator-in-100-lines-of-go/)
-* [**Go**: _Let's Create a Simple Load Balancer_](https://kasvith.me/posts/lets-create-a-simple-lb-go/)
-* [**Go**: _Video Encoding from Scratch_](https://github.com/kevmo314/codec-from-scratch)
-* [**Java**: _How to Build an Android Reddit App_](https://www.youtube.com/playlist?list=PLgCYzUzKIBE9HUJU-upNvl3TRVAo9W47y) [video]
-* [**JavaScript**: _Build Your Own Module Bundler - Minipack_](https://github.com/ronami/minipack)
-* [**JavaScript**: _Learn JavaScript Promises by Building a Promise from Scratch_](https://levelup.gitconnected.com/understand-javascript-promises-by-building-a-promise-from-scratch-84c0fd855720)
-* [**JavaScript**: _Implementing promises from scratch (TDD way)_](https://www.mauriciopoppe.com/notes/computer-science/computation/promises/)
-* [**JavaScript**: _Implement your own — call(), apply() and bind() method in JavaScript_](https://blog.usejournal.com/implement-your-own-call-apply-and-bind-method-in-javascript-42cc85dba1b)
-* [**JavaScript**: _JavaScript Algorithms and Data Structures_](https://github.com/trekhleb/javascript-algorithms)
-* [**JavaScript**: _Build a ride hailing app with React Native_](https://pusher.com/tutorials/ride-hailing-react-native)
-* [**JavaScript**: _Build Your Own AdBlocker in (Literally) 10 Minutes_](https://levelup.gitconnected.com/building-your-own-adblocker-in-literally-10-minutes-1eec093b04cd)
-* [**Kotlin**: _Build Your Own Cache_](https://github.com/kezhenxu94/cache-lite)
-* [**Lua**: _Building a CDN from Scratch to Learn about CDN_](https://github.com/leandromoreira/cdn-up-and-running)
-* [**Nim**: _Writing a Redis Protocol Parser_](https://xmonader.github.io/nimdays/day12_resp.html)
-* [**Nim**: _Writing a Build system_](https://xmonader.github.io/nimdays/day11_buildsystem.html)
-* [**Nim**: _Writing a MiniTest Framework_](https://xmonader.github.io/nimdays/day08_minitest.html)
-* [**Nim**: _Writing a DMIDecode Parser_](https://xmonader.github.io/nimdays/day01_dmidecode.html)
-* [**Nim**: _Writing a INI Parser_](https://xmonader.github.io/nimdays/day05_iniparser.html)
-* [**Nim**: _Writing a Link Checker_](https://xmonader.github.io/nimdays/day04_asynclinkschecker.html)
-* [**Nim**: _Writing a URL Shortening Service_](https://xmonader.github.io/nimdays/day07_shorturl.html)
-* [**Node.js**: _Build a static site generator in 40 lines with Node.js_](https://www.webdevdrops.com/en/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)
-* [**Node.js**: _How to create a real-world Node CLI app with Node_](https://medium.freecodecamp.org/how-to-create-a-real-world-node-cli-app-with-node-391b727bbed3)
-* [**Node.js**: _Build a DNS Server in Node.js_](https://engineerhead.github.io/dns-server/)
-* [**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)
-* [**PHP**: _Modern PHP Without a Framework_](https://kevinsmith.io/modern-php-without-a-framework)
-* [**PHP**: _Code a Web Search Engine in PHP_](https://boyter.org/2013/01/code-for-a-search-engine-in-php-part-1/)
-* [**Python**: _Build a Deep Learning Library_](https://www.youtube.com/watch?v=o64FV-ez6Gw) [video]
-* [**Python**: _How to Build a Kick-Ass Mobile Document Scanner in Just 5 Minutes_](https://www.pyimagesearch.com/2014/09/01/build-kick-ass-mobile-document-scanner-just-5-minutes/)
-* [**Python**: _Continuous Integration System_](http://aosabook.org/en/500L/a-continuous-integration-system.html)
-* [**Python**: _Recommender Systems in Python: Beginner Tutorial_](https://www.datacamp.com/community/tutorials/recommender-systems-python)
-* [**Python**: _Write SMS-spam detector with Scikit-learn_](https://medium.com/@kopilov.vlad/detect-sms-spam-in-kaggle-with-scikit-learn-5f6afa7a3ca2)
-* [**Python**: _A Simple Content-Based Recommendation Engine in Python_](http://blog.untrod.com/2016/06/simple-similar-products-recommendation-engine-in-python.html)
-* [**Python**: _Stock Market Predictions with LSTM in Python_](https://www.datacamp.com/community/tutorials/lstm-python-stock-market)
-* [**Python**: _Build your own error-correction fountain code with Luby Transform Codes_](https://franpapers.com/en/algorithmic/2018-introduction-to-fountain-codes-lt-codes-with-python/)
-* [**Python**: _Building a simple Generative Adversarial Network (GAN) using Tensorflow_](https://blog.paperspace.com/implementing-gans-in-tensorflow/)
-* [**Python**: _Learn ML Algorithms by coding: Decision Trees_](https://lethalbrains.com/learn-ml-algorithms-by-coding-decision-trees-439ac503c9a4)
-* [**Python**: _JSON Decoding Algorithm_](https://github.com/cheery/json-algorithm)
-* [**Python**: _Build your own Git plugin with python_](https://joshburns-xyz.vercel.app/posts/build-your-own-git-plugin)
-* [**Ruby**: _A Pedometer in the Real World_](http://aosabook.org/en/500L/a-pedometer-in-the-real-world.html)
-* [**Ruby**: _Creating a Linux Desktop application with Ruby_](https://iridakos.com/tutorials/2018/01/25/creating-a-gtk-todo-application-with-ruby)
-* [**Rust**: _Building a DNS server in Rust_](https://github.com/EmilHernvall/dnsguide/blob/master/README.md)
-* [**Rust**: _Writing Scalable Chat Service from Scratch_](https://nbaksalyar.github.io/2015/07/10/writing-chat-in-rust.html)
-* [**Rust**: _WebGL + Rust: Basic Water Tutorial_](https://www.chinedufn.com/3d-webgl-basic-water-tutorial/)
-* [**TypeScript**: _Tiny Package Manager: Learns how npm or Yarn works_](https://github.com/g-plane/tiny-package-manager)
-
 ## Contribute 
 * Submissions welcome, just send a PR, or [create an issue](https://github.com/codecrafters-io/build-your-own-x/issues/new)
 * Help us review [pending submissions](https://github.com/codecrafters-io/build-your-own-x/issues) by leaving comments and "reactions"