- 3D Renderer
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- C++: Introduction to Ray Tracing: a Simple Method for Creating 3D Images
- C++: How OpenGL works: software rendering in 500 lines of code
- C++: Raycasting engine of Wolfenstein 3D
- C# / TypeScript / JavaScript: Learning how to write a 3D soft engine from scratch in C#, TypeScript or JavaScript
- Java / JavaScript: Build your own 3D renderer
- Java: How to create your own simple 3D render engine in pure Java
- JavaScript / Pseudocode: Computer Graphics from scratch
- Python: A 3D Modeller
- C#: How To: Augmented Reality App Tutorial for Beginners with Vuforia and Unity 3D [video]
- C#: Windows Mixed Reality Academy [video]
- C#: How To Unity ARCore [video]
- C#: AR Portal Tutorial with Unity [video]
- C#: How to create a Dragon in Augmented Reality in Unity ARCore [video]
- C#: How to Augmented Reality AR Tutorial: ARKit Portal to the Upside Down [video]
- C#: Building a BitTorrent client from scratch in C#
- Nim: Writing a Bencode Parser
- Node.js: Write your own bittorrent client
- Python: A BitTorrent client in Python 3.5
- ATS: Functional Blockchain
- C#: Programming The Blockchain in C#
- Go: Building Blockchain in Go
- Go: Code your own blockchain in less than 200 lines of Go
- Java: Creating Your First Blockchain with Java
- JavaScript: A cryptocurrency implementation in less than 1500 lines of code
- JavaScript: Build your own Blockchain in JavaScript
- JavaScript: Learn & Build a JavaScript Blockchain
- JavaScript: Creating a blockchain with JavaScript [video]
- JavaScript: How To Launch Your Own Production-Ready Cryptocurrency
- Python: Learn Blockchains by Building One
- Python: Build your own blockchain: a Python tutorial
- Python: A Practical Introduction to Blockchain with Python
- Python: Let’s Build the Tiniest Blockchain
- Ruby: Programming Blockchains Step-by-Step (Manuscripts Book Edition)
- TypeScript: Naivecoin: a tutorial for building a cryptocurrency
- Haskell: Roll your own IRC bot
- Java: How To Make a Scary Russian Twitter Bot With Java
- Node.js: Creating a Simple Facebook Messenger AI Bot with API.ai in Node.js
- Node.js: How to make a responsive telegram bot
- Node.js: Create a Discord bot
- Node.js: gifbot - Building a GitHub App
- Python: Chatbot Fundamentals: An interactive guide to writing bots in Python
- Python: How to Build Your First Slack Bot with Python
- Python: Build a Reddit Bot
- Python: How To Make A Reddit Bot [video]
- Python: How To Create a Telegram Bot Using Python
- Python: Create a Twitter Bot in Python Using Tweepy
- Python: Creating Reddit Bot with Python & PRAW [video]
- R: Build A Cryptocurrency Trading Bot with R
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- C++: Implementing a Key-Value Store
- C#: Build Your Own Database
- Clojure: An Archaeology-Inspired Database
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- JavaScript: Dagoba: an in-memory graph database
- Python: DBDB: Dog Bed Database
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- C: Linux containers in 500 lines of code
- Go: Building a container from scratch in Go [video]
- Python: A workshop on Linux containers: Rebuild Docker from Scratch
- Python: A proof-of-concept imitation of Docker, written in 100% Python
- Shell: Docker implemented in around 100 lines of bash
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- JavaScript: GameBoy Emulation in JavaScript
- Python: Emulation Basics: Write your own Chip 8 Emulator/Interpreter
- JavaScript: WTF is JSX (Let's Build a JSX Renderer)
- JavaScript: A DIY guide to build your own React
- JavaScript: Reverse Engineering React
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- JavaScript: Gooact: React in 160 lines of JavaScript
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- C: Let's Make: Dangerous Dave [video]
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- Python: Making Games with Python & Pygame [pdf]
- Ruby: Developing Games With Ruby
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- JavaScript: Gitlet
- JavaScript: Build GIT - Learn GIT
- Python: Just enough of a Git client to create a repo, commit, and push itself to GitHub
- Ruby: Rebuilding Git in Ruby
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- C: Let's code a TCP/IP stack
- Ruby: How to build a network stack in Ruby
- C#: Neural Network OCR
- Go: Build a multilayer perceptron with Golang
- Go: How to build a simple artificial neural network with Go
- Go: Building a Neural Net from Scratch in Go
- Java: Neural Networks: Perceptron [video]
- JavaScript: Neural Network implementation in JavaScript, by an example
- JavaScript: Neural networks from scratch for JavaScript linguists (Part1 — The Perceptron)
- Python: Optical Character Recognition (OCR)
- Python: A Neural Network in 11 lines of Python
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- C: Kernel 201 – Let’s write a Kernel with keyboard and screen support
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- C: Hack the virtual memory
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- C++: Game physics series by Allen Chou
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- C++: Game physics series by Glenn Fiedler
- C++: 3D Physics Engine Tutorial [video]
- C#: TowerFall Physics
- JavaScript: Build your own basic physics engine in JavaScript
- JavaScript: How Physics Engines Work
- JavaScript: Broad Phase Collision Detection Using Spatial Partitioning
- JavaScript: Build a simple 2D physics engine for JavaScript games
- (any): mal - Make a Lisp
- C: Baby's First Garbage Collector
- C: Build Your Own Lisp: Learn C and build your own programming language in 1000 lines of code
- C: Writing a Simple Garbage Collector in C
- C++: Writing Your Own Toy Compiler Using Flex
- C++: How to Create a Compiler [video]
- C++: Kaleidoscope: Implementing a Language with LLVM
- F#: Understanding Parser Combinators
- Go: The Super Tiny Compiler
- Go: Lexical Scanning in Go [video]
- Haskell: Let's Build a Compiler
- Haskell: Write You a Haskell
- Java: Crafting interpreters: A handbook for making programming languages
- JavaScript: The Super Tiny Compiler
- JavaScript: The Super Tiny Interpreter
- OCaml: Writing a C Compiler
- Pascal: Let's Build a Compiler
- Python: A Python Interpreter Written in Python
- Python: lisp.py: Make your own Lisp interpreter
- Python: Simple Iterator-based Parsing
- Python: Simple Top-Down Parsing in Python
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- Racket: Beautiful Racket: How to make your own programming languages with Racket
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- Ruby: Markdown compiler from scratch in Ruby
- C: A Regular Expression Matcher
- C: Regular Expression Matching Can Be Simple And Fast
- JavaScript: Build a Regex Engine in Less than 40 Lines of Code
- JavaScript: How to implement regular expressions in functional javascript using derivatives
- Perl: How Regexes Work
- Scala: No Magic: Regular Expressions
- CSS: A search engine in CSS
- Python: Implementing a Search Engine with Ranking in Python
- Python: Building a search engine using Redis and redis-py
- Python: Building a Vector Space Indexing Engine in Python
- Python: Building A Python-Based Search Engine [video]
- Python: Making text search learn from feedback
- C: Tutorial - Write a Shell in C
- C: Let's build a shell!
- C: Writing a UNIX Shell
- C: Build Your Own Shell
- Ruby: A Unix Shell in Ruby
- JavaScript: JavaScript template engine in just 20 lines
- JavaScript: Understanding JavaScript Micro-Templating
- Python: Approach: Building a toy template engine in Python
- Python: A Template Engine
- Ruby: How to write a template engine in less than 30 lines of code
- Python: Create a Simple Python Text Editor!
- C: Build Your Own Text Editor
- C++: Designing a Simple Text Editor
- Python: Python Tutorial: Make Your Own Text Editor [video]
- Python: Driver Drowsiness detection using OpenCV and Python
- Python: Developing a License Plate Recognition System with Machine Learning in Python
- Python: Building a Facial Recognition Pipeline with Deep Learning in Tensorflow
- C#: Writing a Web Server from Scratch
- Node.js: Let's code a web server from scratch with NodeJS Streams
- PHP: Writing a webserver in pure PHP
- Python: A Simple Web Server
- Python: Let’s Build A Web Server.
- Python: Web application from scratch
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- Ruby: Building a simple websockets server from scratch in Ruby
- (any): From NAND to Tetris: Building a Modern Computer From First Principles
- Alloy: The Same-Origin Policy
- C: How to Write a Video Player in Less Than 1000 Lines
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- C++: Build your own VR headset for $100
- C++: How X Window Managers work and how to write one
- C++: Writing a Linux Debugger
- C++: How a 64k intro is made
- C#: C# Networking: Create a TCP chater server, TCP games, UDP Pong and more
- Java: How to Build an Android Reddit App [video]
- JavaScript: Build Your Own Module Bundler - Minipack
- JavaScript: Learn JavaScript Promises by Building a Promise from Scratch
- JavaScript: Implementing promises from scratch (TDD way)
- Kotlin: Build Your Own Cache
- Nim: Writing a DMIDecode Parser
- Nim: Writing a INI Parser
- Nim: Writing a Link Checker
- Nim: Writing a stow alternative to manage dotfiles
- Nim: Writing a URL Shortening Service
- Node.js: Build a static site generator in 40 lines with Node.js
- PHP: Write your own MVC from scratch in PHP
- Python: How to Build a Kick-Ass Mobile Document Scanner in Just 5 Minutes
- Python: Continuous Integration System
- Python: Recommender Systems in Python: Beginner Tutorial
- Python: Write SMS-spam detector with Scikit-learn
- Python: A Simple Content-Based Recommendation Engine in Python
- Python: Stock Market Predictions with LSTM in Python
- Ruby: A Pedometer in the Real World
- Ruby: Creating a Linux Desktop application with Ruby
- Rust: Let's build a browser engine
- Rust: Building a DNS server in Rust
- TypeScript: Make your own GraphQL metrics dashboard
Contributions are very welcome: Submit tutorial
To the extent possible under law, Daniel Stefanovic has waived all copyright and related or neighboring rights to this work.