the little things
Free browser-based utilities for writing, design, and dev, fun little apps for play, and open-source projects.
a builder's codex
An open, primary-source library of operator insights. Atomic claims, named operators, verifiable sources. 150 cards · 190 operators · 24 synthesis patterns.
Open codex →Tools
explore all tools →Human + AI
open source · githuba builder's codex
operator insight library
Atomic operator-attributed claims with mechanism, conditions, evidence, signals, counter-evidence. Free to cite. The codex is opinionated about epistemics so you don't have to be.
marker
slides CLI
Render a JSON file as a slide deck. Edit inline, click to add comments, one command to build. Takes 3 minutes, not 30.
chalk
edit-in-place
Writer edits inline. Designer comments on the real page. AI applies. No more doc-to-Figma-to-code transcription.
curiosity
research agent
Ingest any link, auto-analyze topics, surface knowledge gaps, and chase what you care about. Curiosity makes the cat.
iOS + iPad
coming to App StoreLive kaleidoscope patterns from your camera or photo library. 12 symmetries, 4 animation personalities, Metal shaders, seamless video loops. Coming to App Store.
Keys, drums, sequencer, sampler, and MIDI — native on iPhone and iPad. AVAudioEngine, Core MIDI, three-pane iPad layout. Coming to App Store.
No sign-up, no downloads, no server-side stuff. Every app runs on-device in your browser. The GitHub projects are open source: fork it, or install locally.