Eight developer tools. One fast, native app.
Cast bundles the utilities you reach for every day — JSON, JWT, Base64, regex, unit conversion, hashing, URL encoding, and a Pomodoro timer — into a single sandboxed macOS app. No network calls, nothing sent anywhere.
Eight tools, one sidebar
Every tool lives in the same window, one click away, with its own state preserved as you switch between them.
Private by design
Cast makes no network calls of any kind. Every tool runs entirely on your Mac, sandboxed, start to finish.
Built-in help for every tool
A quick reference next to each tool's title explains what it does and how to use it — no docs to go hunting for.
Native, not Electron
Built in Swift and SwiftUI. Launches instantly, stays light on memory, and follows your system's light or dark mode.
JSON Formatter
JWT Decoder
Base64
Regex Tester
Unit Converter
Hash Generator
URL Encoder/Decoder
Pomodoro Timer