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.

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.

Full entry → Calyx VPN

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).

Full entry → Mullvad VPN

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.

Compared as of May 12, 2026.