Google launched the .app TLD specifically for software applications. It requires HTTPS by default (built-in security), signals 'application' instantly, and has become the standard for SaaS products and mobile apps.
Why .app Is Popular
.app is one of the few TLDs with built-in HTTPS enforcement, making it inherently secure. Its meaning is immediately clear — this is an application. Major products like Linear, Railway, and Cash App use .app for its clarity and security.
Examples
- linear.app (Linear) — Project management tool — .app signals it's a software product.
- railway.app (Railway) — Developer deployment platform using .app for clarity.
- cash.app (Cash App) — Square's payment app — .app is literally what it is.
- craft.app (Craft) — Document editor choosing .app for its software identity.
- lemon.app (Lemon) — Freelancer marketplace with a fresh .app domain.
- cal.app (Cal.com) — Scheduling software using .app for its product identity.