🐾 Free · No sign-up · Open source

A code editor that's secretly a cat colony

Hand-drawn cats live inside your editor. They chase your cursor, hiss at syntax errors, nap on TODO comments, and parade across the screen when your code runs clean.

main.js demo
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13 cats. All at work in your editor.

😾
Error cat
😴
Nap cat
🐈
Parade cat
🔍
Detective
🐱
Cursor cat
🎉
Milestone
See all the cats →
Open the full editor → See code examples →

Ten cats. All of them at work.

Each one has a job in your editor. See all the cats →

🐱
Cursor cat
Follows your mouse. Pounces when you move too fast. Sulks when you stop.
😾
Error cat
Arches its back at red squiggles. Settles the moment the bug is gone.
😴 z z
Nap cat
Curls up on TODO comments and breathes softly. Not helpful. Very cozy.
🐈🐱🐈‍⬛😸
Parade cat
Clean run? The whole colony marches across the screen. Every single time.
/\_____/\ ( o o ) =( Y )= ) ( (_)-(_)
ASCII cat
Type :cat and run. Seven hand-crafted designs, printed in amber to the console.
🎉
Milestone cat
1st, 10th, 25th, 50th run — full party. Confetti. A hat. It remembers everything.
"
The only editor that feels like home at 2am.

— from the reason we built this

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We're building a desktop version, paid plans, and more cats. Leave your email and we'll meow at you when there's something new.