Proton Suite

Proton's privacy suite — including ProtonMail, ProtonVPN, Proton Drive, Proton Calendar, and Proton Pass — reached 100 million registered accounts in 2025, establishing it as the most comprehensive end-to-end encrypted productivity platform. Its Swiss jurisdiction, zero-knowledge architecture, and open-source code made it the go-to choice for journalists, activists, and privacy-conscious professionals worldwide.