Parallel Spaces: Multi-Instance App Launcher for macOS

Honestly, it started with Claude. I had one account for work and another for personal projects, and I got tired of constantly switching between them. Then I noticed I was running into the same problem with WhatsApp, Firefox, pretty much every app where I needed more than one account. It felt strange because this is something phones solved years ago. On a Mac, though, you're still expected to make do with a single app instance. So I built Parallel Spaces. It's a simple native app that lets you create a completely separate copy of any Mac app with one click. Each one gets its own account, data, settings, and Dock icon. No tricks, no complicated setup, just a straightforward way to keep different parts of your life separate.