Engineer Tools

Engineer Tools is a native macOS app that puts 26 essential developer utilities in one place — no browser tabs, no ads, no data leaving your machine.

Stop bouncing between random websites to validate a YAML file, decode Base64, check a regex, or convert a Unix timestamp. Engineer Tools does it all offline, instantly, in a single app built specifically for engineers.

FREE TOOLS
Section Robocops
Text Comparison, Markdown Editor, YAML Linter, JSON Playground, XML Validator, HTML Validator, and Regex Tester. Auto-validate as you paste — no buttons to click.

PREMIUM TOOLS — one-time $4.99 unlock:
Generators: Text generator (Lorem Ipsum), Password generator (secure random)
Encoders/Decoders: MD5/SHA hashing, Base64, JWT encode/decode
Converters: Binary/Hex/Octal, Unix Time
Network: Network Scan (LAN devices & ports), IP Calculator (subnets), Cronjob Parser
Utilities: Time Keeper (Pomodoro focus timer), Caffeine (prevent Mac sleep), Emoji Picker, Lunar Calendar, Calculator (scientific & programmer), Color Picker (HEX/RGB/HSL), Clipboard (history & transforms), Frequency (focus & productivity).

WHY ENGINEERS LOVE IT:
- Privacy-first: all data stays on your Mac. Nothing is sent to the cloud.
- Instant: native SwiftUI app, no Electron, no web views. Everything loads in milliseconds.
- Offline: works without an internet connection.
- Multi-language: English, Vietnamese, French, German, Greek, and Hebrew.
- Dark & Light mode: follows your system or toggle manually.
- Quick-toggle bar: control background features (timer, caffeine, clipboard, frequency) from any tool screen.

Built by engineers, for engineers.