In a blog post, the organisation that produces the Firefox browser among other software, said the sale of the ProtonVPN subscriptions was a means of raising revenue and that in coming months it would test out other means of bringing in cash as well.
Mozilla said it had chosen ProtonVPN after evaluating a long list of market-leading VPN services.
"ProtonVPN offers a secure, reliable, and easy-to-use VPN service and is operated by the makers of ProtonMail, a respected, privacy-oriented email service," Mozilla said.
The service will cost US$10 per month, more than what it costs to take out a subscription to ProtonVPN directly.
"A portion of these proceeds will be shared with ProtonVPN, to offset their costs in operating the service, and a portion will go to Mozilla," the blog post said.
"In this way, subscribers will be directly supporting Mozilla while benefitting from one of the very best VPN services on the market today."
The Opera browser already offers a VPN in its desktop version, though this is more of proxy whereby one can access sites through the Americas, Europe, Asia and an optimal location.
Graphics: courtesy Mozilla