Each PumaWorx app is a single HTML file you can read end to end: no install, no account, no outbound traffic. Small enough to audit, simple enough to trust — built for sensitive data, hardened environments, and anywhere you'd rather not pull in another cloud dependency. Your data lives in the browser. It stays there.
PumaWorx is undergoing a period of rapid transition. That is to say, I am actively canonizing my reused code bit by tiny bit, and you should know that I push to main and test in prod. If you find a bug, feel free to raise it on GitLab.
Three rules every app in the suite follows. They're not optional — they're the reason PumaWorx exists.
01
Each app is one HTML file. Drop it on a USB stick, install it as a PWA, save it to your downloads folder, archive it on a NAS. Wherever a browser runs, the app runs.
02
No outbound traffic means no exfiltration risk, no third-party SaaS to vet, no remote dependencies to compromise. The browser and the file are the entire trust boundary.
03
PumaWorx is a personal passion project and excuse to learn AI-accelerated development. Every app solves a real challenge I have.
Pick one. Use it standalone. Or use them together — they're designed to hand work off to each other through plain files.
01 Capture
Schema-defined task tracker
An offline single-HTML task and reference manager. A fuller-featured successor to PumaTracker, with user-definable workspaces, schemas, and datasets. Runs in your browser or installs as a PWA.
02 Visualize
Drag-and-drop kanban
An offline single-HTML kanban board that roundtrips with PumaKeeper. Full markdown descriptions, labels, dates, and checklists travel between the two without a single API call.
03 Write
Hybrid markdown notetaker
A WYSIWYG markdown editor with the feel of Obsidian — but it's one HTML file, no vault folder required. Hybrid rendering means you write in plain markdown and see formatted output inline.
04 Record
Timestamped event log & timeline assembler
A handler's log built for incident response and after-action reporting. Capture events in real time, or assemble timelines from multiple time zones. Categorize, tag, and export views straight into your AAR.
05 Brainstorm
Mind mapper & outliner
A single-HTML mind mapper and outliner. Brainstorm visually, then collapse the same data into a structured outline for transfer into PumaKeeper or PumaNoter.
06 Diagram
Process flow designer
A single-HTML flowcharting app for process documentation. Design a workflow, export it as PNG, SVG, Mermaid, or Markdown — then embed it wherever you need it.
07 Query
SQL parser for JSON & CSV
An offline single-HTML SQL engine for the exports the rest of the suite produces. Drop in a JSON or CSV file, write SQL, get answers — no database server, no warehouse, no Python.
Pick whichever fits how you work. They're all equally official and they all do the same thing.
STEP 01 · LIGHTEST
Visit pumakeeper.greykit.com (or any other). The app loads. You're done. Browser caches the file — works offline after the first visit.
STEP 02 · PORTABLE
Right-click → Save Page As. You now have a portable, offline-forever copy. Open it from a USB stick, a sandboxed VM, an air-gapped laptop.
STEP 03 · POLISHED
Chrome/Edge: install icon in the address bar. Safari iOS: Share → Add to Home Screen. It's a desktop or phone app now, no app store involved.
localStorage. That's per-browser and per-device. Use the built-in Export button (JSON, CSV, or Markdown depending on the app) any time you want a portable backup — or to hand the data to another app in the suite.
PumaWorx is one person's labor of love. File issues, propose features, or just read the code. It's all there.