Proton
Open-source encrypted privacy suite
Geneva, Switzerland
Founded 2014
Proton AG is a Swiss technology company that provides a suite of open-source, end-to-end encrypted privacy tools including email, VPN, cloud storage, calendar, password manager, and authenticator. Founded in 2014 by scientists from CERN and MIT, the company is majority owned by the non-profit Proton Foundation and serves over 100 million users worldwide. All Proton applications are open source and have been independently audited by third-party security experts.
Websites:
Last Updated: June 26, 2026
Current Valuation
$306.9M
as of June 30, 2024 (Source)
Funding Summary
$6.5M
Total reported funding
Media Mention
September 2, 2026
Gizmodo: Forget Gmail or Outlook, Proton's Premium Encrypted Email Subscription Is Just $1 for New Users
Media Mention
September 1, 2026
Gizmodo: Forget Google Drive, Proton's 200GB Encrypted Cloud Storage Drops to Just $1 at 80% Off
Media Mention
September 1, 2026
PCMag: Proton Pass Review: Best-In-Class Free Password Management
OSS News & Views
August 28, 2026
Forbes: Popular VPN Apps Could Be ‘Spying’ On Millions, Proton Warns
Announcement
August 28, 2026
Proton: August 27 outage: Incident report - Proton
Showing 1-5 of 10 headlines
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Key People
Core OSS Projects
Monorepo hosting the Proton web clients for Mail, Calendar, Drive, Pass, and other services
License: GPL-3.0
Business Information
Category
ProductivityIndustries
Software
Technologies
PrivacyEncryptionEnd-to-End EncryptionEmailVPN
Sectors
EnterpriseConsumersSMBs
Licenses
GPL-3.0
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Socials and Communities
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