ソフトウェアにはかたちがあります。リポジトリは都市です——ファイルは建物、ディレクトリは地区、言語は石の色です。GitHub のイベントの奔流は銀河であり、新しいコミットのたびに星が灯ります。並んで走るソートアルゴリズムは、奇妙な室内楽団となります。コードを、空間的で、聴こえるものにしました。
Type an npm package and watch its dependency tree bloom into a 3D constellation — shared deps pull together, the most-depended-on packages burn brightest.
HN のトップページを生きた有機体として描きます——記事はスコアに応じた大きさになり、毎分再取得され、順位とポイントが板の呼吸とともにアニメーションします。
GitHub の公開イベントの奔流を、ゆっくり回転する銀河円盤として描画します——新しいコミットのたびに星が灯り、プログラミング言語で色分けされます。
Step through esoteric-language programs as they run — a correct Brainfuck (and OOK!) interpreter that lights up the memory tape, the data pointer, the current instruction, and the output one command at a time.
Watch a tiny program flow through a real compiler — lexer to tokens, parser to AST, three-address IR, then stack-machine assembly — and step through how one construct maps stage to stage.
Watch bubble, quicksort, heap and friends sprint through the same shuffled deck, step for step, in their own lanes.
Type a pattern and watch a cursor sweep your text, lighting every match and capture group while a meter counts the engine’s steps and backtracks.
Watch BFS, Dijkstra, A* and Greedy Best-First flood a grid maze and race to trace the shortest path.
Hash a row of data blocks into a single root, then edit any leaf and watch one change cascade all the way up — or pull a Merkle proof that needs only log₂ n sibling hashes.
Watch keys get hashed, probe their way into buckets, collide, chain, and trigger a live rehash as the table fills.
Watch a branchy commit history build itself the way gitk draws it — commits pop in along colored lanes, branches fan out, and merges braid back together, replayed operation by operation.
Watch a garbage collector trace a live heap from its roots and reclaim the unreachable — mark-and-sweep, reference counting (and its fatal cycle leak), and a generational copying GC.
Type a number and watch its exact IEEE-754 bits unfold into sign, exponent and mantissa — click any bit to toggle it and learn first-hand why 0.1 is never really 0.1.
Edit two versions of a text and watch the diff form — added, removed and kept lines — then open the edit graph to see the algorithm trace the longest common subsequence that every git diff is secretly built on.
A classic five-stage RISC pipeline laid bare — watch instructions overlap, stall on data hazards, forward results, and flush on a mispredicted branch.
Hash servers and keys onto a ring; add or remove a node and watch only ~1/N of the keys move — while virtual replicas smooth the load.
A CPU cache visualizer that shows why memory access patterns dominate performance — hits versus misses, the cache line that brings neighbours along for free, and why row-major beats column-major.
Watch items fan out through k hash functions to light up a bit array, then probe queries that are "definitely not" or "possibly" in the set as false positives bloom.
Toggle the bits of two 32-bit integers and watch AND, OR, XOR, shifts and rotates compute live — binary, hex and signed/unsigned decimal all in sync, with presets that teach how computers actually manipulate bits.
Drop keys into a binary search tree and watch it pivot, recolor, and rebalance itself in real time — plain BST, AVL, or red-black.
Insert keys into a B-tree of order m and watch overflowing nodes split, promote their median upward, and grow the tree — the balanced, fat-node structure behind databases and filesystems.
5 つのソートアルゴリズム——バブル、マージ、クイック、基数、ヒープ——が 3D の棒配列上で並行して競い合い、比較のたびに音が鳴ります。
GitHub リポジトリを 3D の都市として描画します。ファイルは建物（高さ＝コード行数）、ディレクトリは地区、言語が色を決めます。任意の建物をクリックするとソースコードを読めます。