Initializing Sorting Algorithms...
Sorting
Trees
Graphs
Preparing interactive visualizations...
Step-by-step interactive animations for every major algorithm and data structure. Watch the logic unfold, not just the code.
Textbooks give you pseudocode. We give you the algorithm alive — animated, explained, and yours to control.
Pause, rewind, and step through every comparison, swap, and decision. Watch algorithms think.
Colour-coded bars, nodes, and cells show exactly what's happening at every tick of the algorithm.
Best, average, and worst-case Big-O breakdowns alongside every visualizer, not buried in theory.
Syntax-highlighted Python implementations with copy-to-clipboard on every algorithm page.
Quick-reference tables for every algorithm category — search, filter, and compare at a glance.
Randomise arrays, change sizes, and adjust speed sliders to build intuition with your own data.
242 interactive visualizers across 4 subjects — each with animations, explanations, code and an active-recall quiz.
From stacks and sorting to graphs, dynamic programming and indexing.
Stacks, Queues & Linked Lists
Call Stacks & Recursive Thinking
Compare & Swap Algorithms
Find Targets Efficiently
Two Pointers & Sliding Window
XOR Tricks & Bitwise Ops
BST, AVL, Traversals & Tries
Priority Queues & Heapify
Split, Solve & Combine
Explore & Prune Search Space
Memoisation & Tabulation
Traversal & Shortest Paths
Disjoint Sets & Path Compression
Pattern Matching & Hashing
The Structures Behind Fast Lookups
How operating systems, networks, databases and language runtimes actually work.
Scheduling, Memory & Concurrency
From Packets to Protocols
Transactions, Recovery & Query Processing
CS Internals — Visualized
Counting, probability, vectors, linear algebra and calculus you can drag and explore.
Counting Without Listing
Chance, Evidence & Distributions
Arrows You Can Drag, in 2D and 3D
Matrices as Transformations
Rates of Change & Slopes
Accumulation & Area
From a fitted line to neural networks and transformers, with every number computed by a model running in your browser.
Learning from Data
Layers That Learn
CNNs, RNNs and Beyond
Attention Is the Engine
Work across every subject at once.
Quick Complexity Reference
Spaced Repetition Over Every Quiz
Two or Three Algorithms Side by Side
Every algorithm comes alive in under a minute. No setup. No cost. Just click and learn.