Threema is a Swiss end-to-end encrypted messenger that lets you register anonymously without a phone number. The app is a one-time purchase of about CHF 3.99, has an open source client audited by ETH Zurich, and is the secure messaging choice for privacy-focused users and enterprises.
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Proton Mail was founded by CERN scientists in 2014, headquartered in Geneva, Switzerland. It is the world's most trusted end-to-end encrypted email service, offering free 500MB storage with 150 emails/day and paid plans with more features and storage.
Neo Mailbox was founded in 2015, headquartered in Switzerland, offering encrypted email with built-in OpenPGP end-to-end encryption, anonymous registration, and Swiss legal protection. Integrated calendar and contacts for privacy-conscious individual users.
Kolab Now, founded in 2008 in Switzerland, is built on the open-source Kolab groupware framework. It offers end-to-end encrypted email, calendar, contacts, tasks, and file management as a secure collaboration suite under Swiss privacy law.
Exoscale was founded in 2011 and is headquartered in Zurich, Switzerland. It is a leading Swiss cloud server provider offering compute instances, S3-compatible object storage (SOS), and managed databases (DBaaS) across 4 datacenters in Switzerland and Europe, with data sovereignty and Swiss privacy law as its core differentiators.
KeyCDN, founded in 2015 and headquartered in Switzerland, is a developer-experience-focused CDN acceleration provider built around API-first, simplicity, and pay-as-you-go principles, offering real-time image optimization and performance tools.