Proton AG

End-to-end encrypted calendar with event invitations, reminders and private scheduling, on web, mobile and desktop.

• Productivity & notes
• Freemium
• Open source
• Android
• iOS
• +4

End-to-end encrypted password manager that stores logins, notes and cards, supports passkeys and shares vaults.

• Security & privacy
• Freemium
• Open source
• Android
• Browser extension
• +6

End-to-end encrypted cloud storage for syncing, backing up and sharing files, with apps for web, desktop and mobile.

• File storage & sharing
• Freemium
• Open source
• Android
• Command line
• +4

VPN service that encrypts internet traffic and hides the user's IP address, with apps for computers, phones and TVs.

• Security & privacy
• Freemium
• Open source
• Android
• Browser extension
• +4

End-to-end encrypted email service with folders, labels, email aliases, custom domains and apps for desktop and mobile.

• Communication & collaboration
• Freemium
• Open source
• Android
• iOS
• +4