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Proton AG is a Swiss technology company offering privacy -focused online services and software. It is majority owned by the non-profit Proton Foundation. [5]

Proton VPN rises above the competition with an excellent collection of features, a high-performance server network, and a nearly peerless free subscription option, making it the top …

Dec 7, 2025 · Proton, stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 x 10^-27 kg, which is 1,836 times the mass …

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Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.

Proton Mail is based in Switzerland and uses advanced encryption to keep your data safe. Apps available for Android, iOS, and desktop devices.

Proton VPN’s free plan is the only free VPN service with no data limit, no ads and no logs of user activity. Keep your personal data private and secure.