BooBar

Dev tools

40+ offline developer tools, one shortcut away

Formatting a JSON response, decoding a JWT, checking a timestamp — tiny jobs that usually mean pasting sensitive data into a random website. BooBar puts more than 40 converters in a floating panel next to the notch. They run entirely on your Mac.

macOS 14+ · Apple Silicon & Intel · One-time purchase · 30-day refund

BooBar developer tools panel formatting JSON next to the Mac notch

How it works

  1. Press ⌃⇧N

    Open the wheel from any app.

  2. Choose Dev Tools

    A floating panel opens next to the notch.

  3. Paste and go

    Pick a tool, paste your input, copy the result. Nothing leaves your Mac.

The converters you reach for every day

Everything is offline, instant and keyboard-friendly.

  • JSON formatting and validation.
  • Base64 encode and decode.
  • JWT decoding.
  • Regular expression testing.
  • Timestamp conversion.
  • Hashes and colour conversion — and more.

Safe for secrets

Tokens, API responses and customer data shouldn't be pasted into online formatters. BooBar's tools run locally, so there's nothing to upload and nothing to leak.

Questions, answered

Do the tools work offline?

Yes. All of them run locally on your Mac — no network connection is needed.

Which tools are included?

More than 40 converters, including JSON, Base64, JWT, regex, timestamps, hashes and colours.

How do I open them?

Press ⌃⇧N anywhere and choose Dev Tools in the wheel.

Is my data sent anywhere?

No. Input stays on your Mac.

Give your notch something to do.

Free to try. A few megabytes. Native on every Mac.