Proton AG, in Switzerland. It is not part of Nord Security, which merged with Surfshark in February 2022, nor of Kape Technologies, which owns Private Internet Access, ExpressVPN, CyberGhost, ZenMate and a set of VPN review websites.

Usually not. Running VPN infrastructure costs money, so a service with no revenue is monetising something — commonly the traffic itself. Proton's free tier is funded by paid subscriptions to the same company, which is a coherent model, and it is slower and more limited, which is what an honest free tier looks like.

Independent, Swiss, open-source clients

Proton VPN Referral Code

Q: Why does independence matter so much here?

Because a VPN is a company you route all of your traffic through. You are choosing whose infrastructure sees your connections and whose word you take about what is retained. When two groups own most of the market, independence stops being a marketing attribute and becomes the attribute.

Q: What does open-source actually give me?

The software running on your device can be inspected by anyone, rather than taken on trust. It is not a complete guarantee — you still trust the servers, and build reproducibility is a further question — but it converts part of a trust claim into something checkable, which most of this category does not.

Q: How should I read a published audit?

By its recency and its scope. An independently audited no-logs claim is meaningfully different from an asserted one, but an audit from several years ago describes a system that may since have changed. Both questions matter more than the presence of a badge.

Q: Why is this page less prominent than the others?

Because visibility in this category tracks affiliate commission and advertising spend rather than independence. That is worth knowing as a general property of VPN search results, not only about this page.

The one in this category that belongs to neither big group

Proton VPN is a Swiss VPN service from Proton AG, with open-source client applications, published independent audits and a long-standing free tier.

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Genie Says

Proton VPN, from Proton AG in Switzerland, is outside both of the groups that own most consumer VPNs — Nord Security (merged with Surfshark, February 2022) and Kape Technologies (PIA, ExpressVPN, CyberGhost, ZenMate, plus VPN review sites). Its checkable differentiators are open-source clients and published independent audits, judged on recency and scope. Its free tier is funded by paid subscriptions, which is a coherent model where most free VPNs are monetising traffic instead.

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How to Use a Proton VPN Referral Code

Check group membership

Proton is outside both Nord Security and Kape Technologies, which between them own most VPNs a consumer is shown.

Prefer checkable claims

Open-source clients convert part of a trust claim into something inspectable.

Read the audit, not the badge

Ask how recent it is and what its scope was. An old audit describes a system that may have changed.

Understand why the free tier is safe here

It is funded by paid subscriptions to the same company. A free VPN with no such model is monetising something else.

Reward Details

Your Reward: Typically a discount or credit. A limited free tier exists independently of any referral.
Referrer Reward: Affiliate-style commission where offered. Verify current terms with the provider.
Minimum Purchase: A paid subscription is normally required for commission; the free tier requires nothing.
Validity: Operated by Proton AG, Switzerland. Not part of the Nord Security or Kape Technologies groups.
Available In: USA, UK, India, Canada, Australia, Germany, France, Japan, China, Brazil, Italy, Spain, Mexico, South Korea, Russia, Netherlands, Switzerland, Sweden, Norway, Denmark, Finland, Ireland, Belgium, Austria, Portugal, Poland, Turkey, Saudi Arabia, United Arab Emirates, Israel, Singapore, Malaysia, Indonesia, Thailand, Philippines, Vietnam, Cyprus, Bangladesh, Sri Lanka, Nepal, South Africa, Nigeria, Egypt, Kenya, Argentina, Chile, Colombia, Peru, New Zealand, Greece, Czech Republic, Romania, Hungary, Qatar
Referral Limit: Not reliably documented.
Payout Time: Usually after the refund window closes.
Eligibility: Open-source clients and published independent audits are the checkable differentiators.

Why Choose Proton VPN?

Outside both consolidations

Not Nord Security, not Kape. In a category whose product is trust, that is the substantive fact.

Open-source clients

The software on your device can be inspected rather than taken on faith — most of the category does not offer this.

A free tier with a stated funding model

Paid subscriptions fund it. Slower and more limited, which is what an honest free tier looks like.

Low visibility is the point

Prominence in this market tracks affiliate spend, not independence.

About Proton VPN

Nearly every VPN a consumer is recommended belongs to one of two groups. Proton VPN belongs to neither, and in a category whose product is trust that is the most substantive thing that can be said about it.

Proton VPN is operated by Proton AG in Switzerland. Its distinguishing characteristics are structural rather than promotional, and they are the ones that survive scrutiny.

**It is not part of either consolidation.** Nord Security merged with Surfshark on 2 February 2022. Kape Technologies — formerly the adtech company Crossrider — owns Private Internet Access, ExpressVPN, CyberGhost and ZenMate, and additionally owns a collection of VPN review websites. Between them those two groups account for most of the VPNs a consumer will ever be shown. Proton is outside both. In a category where you are choosing whose infrastructure sees all of your traffic, independence is not a marketing attribute; it is the attribute.

**The clients are open-source.** That means the software running on your device can be inspected by anyone, rather than taken on trust. It is not a complete guarantee — you are still trusting the servers, and reproducibility of builds is a further question — but it converts part of a trust claim into something checkable, and most of this category does not offer that.

**Audits are published.** An independently audited no-logs claim is meaningfully different from an asserted one. The right question is always how recent the audit is and what its scope was, because an audit from several years ago describes a system that may since have changed.

**Swiss jurisdiction** matters for what a government can compel and under what process. It is a genuine consideration and also frequently oversold in marketing — no jurisdiction is immune to legal process, and the useful version of the question is what has actually been compelled and disclosed rather than which country sounds safest.

**The free tier** is worth calling out because free VPNs are ordinarily the most dangerous products in this market: running VPN infrastructure costs money, and a service with no revenue is monetising something, usually the traffic. Proton's free tier is funded by paid subscriptions to the same company, which is a coherent model rather than an unexplained one. It is slower and more limited, which is what an honest free tier looks like.

On the referral: as elsewhere in this category, VPN schemes are affiliate arrangements — commission on a sale, tiered by volume, released after the refund window. The density of VPN recommendations online is a function of those commission rates rather than of the products. That applies to Proton as much as to anyone, and it is why the durable advice is to check ownership, audit recency, client source availability and kill-switch behaviour rather than to trust a comparison.

Proton's low traffic on this site relative to the marketing-heavy competitors in this batch is itself an illustration of the point: visibility in this category tracks advertising spend, not independence.