About AppBox
36 small utilities that would each be a separate browser tab, collected into one app that loads instantly and works without a connection.
Why it exists
Most single-purpose online tools are the same shape: a couple of inputs, one number out, and several megabytes of ads and trackers around them. AppBox is the opposite trade — one app, no ads, no analytics, no account, and the computation happens on your device.
That constraint is what makes the offline story real rather than marketing. 34 of the 36 tools never touch the network, because there is nothing they need a server for. The two that do — weather and currency rates — use free, key-less APIs and cache their last result, so they still show you something useful on a train.
Your data
Anything you save — todos, notes, world-clock cities, calculator history, tracked water intake — is written to your browser's local storage on this device. It is never sent anywhere, and there is no server holding a copy. Clearing your browser data, or using the button below, removes it permanently.
There is no analytics script, no cookie banner, and no third-party embed on any page. The only outbound requests the app ever makes are the two weather and currency lookups, and only when you open those tools.
Checking local storage…
What's inside
- Calculators3
- Converters3
- Time5
- Developer10
- Text3
- Productivity4
- Design & Media2
- Finance2
- Health3
- Weather1
- Total across 10 categories36
Built with
- Next.js 16
- App Router, exported as a fully static site
- React 19
- UI, with server components for every static page
- TypeScript
- Strict mode across the app and the Electron layer
- Tailwind CSS v4
- CSS-first design tokens, light and dark
- Electron 43
- Desktop shell, sandboxed with context isolation
- Vite
- Compiles the Electron main and preload processes
- AppBox
- v3.0.0
- Runtime
- Web browser
Author
Built and maintained by Muhammad Sheharyar Butt. AppBox is open source under the MIT licence — issues, ideas and pull requests are all welcome.