Proton

Proton was founded in 2014 by scientists who met at CERN, led by Andy Yen, building encrypted email (ProtonMail) as a response to the Snowden revelations about mass government surveillance. The company bootstrapped from a crowdfunding campaign that raised $550K in 2014 to a suite of privacy tools — ProtonMail, ProtonVPN, ProtonDrive, ProtonCalendar, and ProtonPass — with 100M+ registered users across its products. Proton's privacy-first positioning attracted a loyal base of journalists, activists, lawyers, and privacy-conscious professionals who actively recruit others to the platform. The company operates under Swiss privacy law, giving users legal protections beyond what US or EU companies can offer. A generous free tier (1GB storage, limited messages) created enormous top-of-funnel, converting to paid plans when users need more storage or features. Proton's mission-driven branding made customers feel they were supporting a cause, not just buying software — creating evangelical advocates who spread the product through word of mouth.