ProtonVPN is a virtual private network service developed by the team behind ProtonMail, a secure email provider. It aims to enhance online privacy and security by encrypting internet traffic and masking users' IP addresses. This allows users to browse the internet anonymously and access geo-restricted content. The service offers both free and paid plans, with the paid options providing additional features like faster speeds and access to more servers. ProtonVPN is known for its strong commitment to privacy, as it is based in Switzerland, which has strict data protection laws.