comparison · VPN providers
Calyx VPN vs Mullvad VPN
Both are listed in VPN providers. The table below pulls directly from each service’s data sheet; see each entry for sourcing.
| Field | Calyx VPN | Mullvad VPN |
|---|---|---|
| KYC | no KYC | no KYC |
| Category | VPN providers | VPN providers |
| Jurisdiction | United States (Calyx Institute, NY) | Sweden (operator-disclosed) |
| Payment methods | donation | cash-by-mail, crypto, card, bank-transfer |
| Fiat on-ramp | no | no |
| Custodial | no | no |
| Open source | yes | yes |
| Founded | 2014 | 2009 |
| Last verified | May 12, 2026 | Jan 1, 2026 |
Calyx VPN — summary
Calyx VPN is the non-profit no-account VPN from the Calyx Institute.
- + Operated by Calyx Institute non-profit (founder Nicholas Merrill of the 2004 National Security Letter case).
- + No accounts, no signup, no identity binding at all.
- + Open-source Bitmask client; reproducible builds.
- − U.S. operator subject to U.S. legal process; the operator's transparency posture is what mitigates this.
- − Smaller server fleet than commercial peers.
- − Speed and capacity are membership-limited.
Mullvad VPN — summary
Mullvad is the reference no-account VPN.
- + Account model is a randomly-generated number; no personal information requested at signup.
- + Cash-by-mail is supported and well-documented.
- + In 2023, a Swedish police search reportedly produced no customer data — operator confirmed "no logs" architecture publicly.
- − Operator switched from port-forwarding to no-port-forwarding in 2023; users who relied on it for P2P need to re-evaluate.
- − Card and bank payments still leak the payer identity to the payment processor, even if Mullvad never asks.
- − Facts need re-verification by operator (last seeded 2026-01).
When to choose which
Treat this section as heuristic. Privacy properties depend on how you use the service, not just which one you pick.
- Choose Calyx VPN if operated by calyx institute non-profit (founder nicholas merrill of the 2004 national security letter case)..
- Choose Mullvad VPN if account model is a randomly-generated number; no personal information requested at signup..
- Either way, re-check the entry’s last verified date — the VPN providers category churns.
Mentioned in (combined)
Pages on the site that reference Calyx VPN, Mullvad VPN, or both.
Ranked picks
Guides
- Operational privacy — combining tools without correlating yourself
- Mullvad vs ProtonVPN in 2026 — head-to-head VPN comparison
- Privacy stack for activists in 2026
- Privacy stack for expats and cross-border travelers in 2026
- Privacy stack for crypto users in 2026
- Privacy stack for developers and sysadmins in 2026
- Privacy stack for whistleblowers in 2026
- Privacy stack for journalists in 2026
Quick answers
Country pages
Compared as of .