Introduction
What Developers Kit is, what's inside, and how these docs are organized.
Developers Kit is one Mac app with 8 developer tools inside. You open one window, pick a tool from the sidebar, and get to work. That's the whole idea.
Everything is local-first: your passwords, clipboard history, database credentials, and environment variables live on your Mac (or in the macOS Keychain) — never on a server. The app has no accounts, no sign-up, no analytics, and no tracking.
The 8 tools
Apps — the four big tools:
Password Manager
A local-only vault: master password, Touch ID, TOTP codes, breach checks.
Database Client
Postgres, MySQL, SQLite, Redis, MongoDB, DynamoDB — one safe window.
ENV Manager
Environment variables stored in the Keychain, exported as .env files.
Clipboard Manager
Everything you copy, searchable, one keystroke away (⌃⌘V).
Utilities — the four quick tools:
JWT Inspector
Decode tokens and actually verify the signature.
JSON Formatter
Messy JSON in, readable JSON out — locally.
Diff Tool
Two texts, every changed line, word, or character.
Port Manager
See who owns every port. Free port 3000 in seconds.
How to read these docs
- New here? Start with Installation, then skim Permissions & Privacy so the Touch ID prompts make sense.
- Looking for one feature? Press ⌘K and search these docs.
- Just want the shortcuts? They're all on one page.
Every tool page starts with a short animated demo of the tool doing its job, then walks through each feature step by step. No jargon without a plain-English explanation.