Tech
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Cryptii
A modular, visual playground for chaining together classical ciphers and encodings step by step, making it easy to see e…
Crypto 101
A free introductory course on cryptography covering block ciphers, hashing, key exchange and common pitfalls, aimed at r…
Crypto Museum
An extraordinarily detailed online museum documenting historic cipher machines, from the Enigma to Cold War spy radios a…
Cryptoclub
An educational outreach project teaching classical cipher-breaking through hands-on activities, letting visitors crack C…
CryptoHack
A gamified platform teaching modern cryptography through capture-the-flag style challenges, popular with security and cr…
CrypTool
An interactive cryptology learning site where you play with ciphers online, work through lessons, and solve puzzles to b…
Cryptopals Crypto Challenges
A famous set of forty-eight hands-on programming challenges that teach modern cryptography by having you break real-worl…
CryptPad
An end-to-end encrypted collaborative office suite for documents, spreadsheets, and whiteboards that nobody but the invi…
CS 189 Introduction to Machine Learning
The public course site for UC Berkeley's introduction to machine learning, with lecture slides, notes, discussion worksh…
CS 223 Purely Functional Data Structures
A University of Chicago course site on purely functional data structures taught in the Elm language, with lecture notes…
CS 4414 Operating Systems
The University of Virginia operating systems course site, with lecture notes, slides, and assignments that teach systems…
CS 61A Lecture Videos
Berkeley's CS 61A lecture videos from Spring 2014, an introduction to programming and computer science taught in Python…
CS 61B Data Structures
The full Spring 2016 site for UC Berkeley's data structures course, with lecture videos, labs, homework, and projects th…
CS 696 Functional Design and Programming
A San Diego State University course site on functional design and programming, with lecture material and assignments cov…
CS Academy
An educational platform for discovering computer science through interactive lessons and a seamless online code editor,…
CS Unplugged
Free classroom activities that teach computer science with cards, string and puzzles, no computer needed. Printable less…
CS:APP Student Labs
The programming labs from the CMU textbook Computer Systems: A Programmer's Perspective, including the well-known Data L…
CS1000
A beginner-friendly reference site that gives insight into the many subjects around computer science and software engine…
CS231n: Deep Learning for Computer Vision
Stanford's CS231n course notes, a widely used set of free written tutorials on neural networks, convolutional networks,…
CS261: A Second Course in Algorithms
Course page for Tim Roughgarden's Stanford course with lecture notes, problem sets and readings on network flow, linear…
CS50x
Harvard's famous introduction to computer science, available free online with full lectures, problem sets, and a browser…
CSCI E-1: Understanding Computers and the Internet
Harvard Extension School's introductory computer science course site, with lecture recordings that explain how computers…
CSDIY
A self-study guide to computer science that collects the best free university courses, labs, and projects so you can tea…
CSRankings
A metrics-based ranking of computer science departments and faculty by publication activity at top venues, filterable by…
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