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.

Last Updated: June 26, 2026

Current Valuation

$306.9M

as of June 30, 2024 (Source)

Funding Summary

$6.5M

Total reported funding

Recent Headlines

No headlines recorded yet.

Core OSS Projects

Monorepo hosting the Proton web clients for Mail, Calendar, Drive, Pass, and other services

License: GPL-3.0

Business Information

Category

Productivity

Industries

Software

Technologies

PrivacyEncryptionEnd-to-End EncryptionEmailVPN

Sectors

EnterpriseConsumersSMBs

Licenses

GPL-3.0

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