>_Native · Local-first · No account

Stop pasting your tokens
into strangers’ websites.

Dev Tools is a native macOS workspace with eight local-first utilities — JWT inspector, database client, password vault, clipboard history, port manager, and more. Everything runs on your Mac. Nothing phones home.

Download on theMac App Store$14.99 · one-time purchase · macOS 26+

Dev Tools workspace — screenshot coming soon

One window. Eight tools. Zero network calls you didn’t ask for.

Every utility in Dev Tools does its work on-device. JWTs decode locally. JSON formats locally. Passwords are sealed with AES-256-GCM into a file that never syncs anywhere. The only time Dev Tools touches the network is when you connect to your own database — and even then, a six-level safe mode stands between you and a bad UPDATE.

What’s in the window.

JWT Inspector

Paste any token. See every claim.

Header, payload, claims table, interactive JSON tree — and real HS256 signature verification against your secret. jwt.io, minus the website.

JWT Inspector — screenshot coming soon

ENV Manager

Secrets in the Keychain, not in plaintext.

Environment values live in the macOS Keychain and reveal only after Touch ID — every single time. Export a .env only when you actually need one.

ENV Manager — screenshot coming soon

Password Manager

A vault that never phones home.

Master password → PBKDF2 (650,000 rounds) → AES-256-GCM. TOTP codes, Watchtower audits, breach checks via k-anonymity — only five characters of a hash ever leave your Mac.

Password Manager — screenshot coming soon

Database Client

Postgres to Redis to Mongo. One window.

Connect over SSH tunnels, query in a tree-sitter editor, edit rows inline with deferred commits. Six-level safe mode gates every statement; production writes ask for Touch ID.

Database Client — screenshot coming soon

JSON Formatter

Messy JSON in. Readable JSON out.

Format, minify, validate, sort keys, walk the tree — locally. Your API payloads are none of the internet's business.

JSON Formatter — screenshot coming soon

Diff Tool

Two versions. Every change.

Instant line diffs with split and unified views. No character limits, no upload, no ads next to your config files.

Diff Tool — screenshot coming soon

Clipboard

Everything you copied, one keystroke away.

⌃⌘V opens a search palette over any app. OCR makes screenshots searchable; sensitive-data detection keeps API keys and card numbers out of history.

Clipboard — screenshot coming soon

Port Manager

Port 3000 is busy. Now you know why.

Every listening port with its process and PID, live. One click copies the kill command — no more lsof archaeology when a dev server won't die.

Port Manager — screenshot coming soon

Native macOS

Not another Electron wrapper.

SwiftUI throughout, JetBrains Mono everywhere, menu-bar quick launch, Touch ID where it matters. It opens fast because there's no Chromium inside.

One-time purchase

Buy it once. Use it forever.

No subscription. No account. No analytics. $14.99 on the Mac App Store.

Local-first isn’t a feature. It’s the whole point.

Dev Tools is sandboxed, notarized, and built for the Mac App Store. There is no telemetry to opt out of, because there is no telemetry.

0 analytics SDKs
0 accounts required
1 kind of network call — your own databases
100% on-device crypto

Questions, answered.

Does Dev Tools send anything off my Mac?+

Two things only, both yours to trigger: connections to your own databases, and the optional password breach check, which sends five characters of a SHA-1 hash (k-anonymity) to Have I Been Pwned. Everything else is on-device.

Can I import from 1Password, Chrome, or Bitwarden?+

Yes — CSV import understands all three formats. Export is CSV too, gated behind Touch ID.

Which databases does it support?+

PostgreSQL, CockroachDB, MySQL, MariaDB, SQLite, Redis, MongoDB, and DynamoDB — with SSH tunneling for the ones behind a bastion.

Is it a subscription?+

No. One purchase on the Mac App Store, yours forever.

What does it require?+

macOS 26 or later. Touch ID is used where available; a Mac without it falls back to your password.

Your favorite dev tools, minus the tabs.