CalyxVPN is one of the very few genuinely free, genuinely anonymous VPNs - no account, no email, open-source client and server, run by a respected New York privacy nonprofit founded by the man who challenged the FBI's NSL gag order. But it is a small ideological service, not a product: one OpenVPN provider with no published gateway list, mediocre speeds, no streaming, no iOS, and - critically - a shaky uptime record. Users reported outages in late 2023, a certificate-breaking update in Dec 2024, an 'irreversible server outage' in mid-2025, continued connection failures in Aug 2025, and as of 2026-11-03 its Bitmask provider API returns 404 while the operator's homepage still advertises a free VPN; a third-party comparison claims the service went dark around January 2026. Treat it as a privacy community tool that may or may not be up when you need it, and verify connectivity before relying on it.
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draft generated by Qwen3, fact-checked by the vpncomparison editorial desk · review version 2 · prose updated 2026-11-08 · facts as of 2026-11-03 · how we verify
Calyx VPN is a free, no-account service run by The Calyx Institute, a US 501(c)(3) nonprofit founded in 2010 by a former ISP who challenged the FBI’s NSL gag order. Built on the open-source LEAP stack (Bitmask client, OpenVPN), it offers anonymous access with no email or payment required. However, its operational status is uncertain: repeated outages have been reported since 2023, the provider API now returns 404s, and third-party sources claim it went dark in January 2026 - though the homepage still advertises the service.
Calyx claims it does not monitor your internet usage or communications, and its privacy policy states it retains only minimal logs - aggregated data for troubleshooting and IP connection logs for a limited time. This claim rests solely on policy, not audits or court-tested evidence, classified as "policy-only" with no transparency reports or published logs. It operates in the US (a Five Eyes jurisdiction), uses pinned certificates via the LEAP stack, and publishes no warrant canary. While the architecture (no accounts, open-source clients) supports privacy, there is no independent verification that logs aren’t kept at the gateway level.
Calyx VPN is entirely free - no intro price, no renewal cost, no paid tier. Access requires no payment, email, or account. Memberships on calyx.org fund the nonprofit but are unrelated to VPN access. The service accepts anonymous Bitcoin and cash donations for memberships, but these are optional. There is no renewal trap because there is no billing cycle. The derived_pricing confirms no charges: three-year cash total is null, renewal ratio is null - this is a donation-funded free service.
The service uses OpenVPN only, with no WireGuard support. It includes obfuscation via "bridges" (Pluggable Transports) to evade DPI-based blocking, a kill switch, split tunneling (Android), and Tor-over-VPN capability. It does not support multihop, P2P, or streaming geo-unblocking. Servers count and countries are unconfirmed, though sources suggest ~15 gateways in ~8 countries. Supported platforms: Android, Linux, and macOS - no iOS app. Performance is untested by us, but user reports consistently describe slow speeds, outages, and instability.
Run by The Calyx Institute, a Brooklyn-based nonprofit co-founded by Nicholas Merrill, known for his legal fight against NSLs. The institute also develops CalyxOS and supports Tor projects. Despite its strong privacy ethos, infrastructure fragility is documented: a July 2025 "irreversible server outage" forced an emergency migration of membership data to Vultr. The service has faced recurring downtime since 2023, with API failures as of late 2026. No audits, no canary, and no evidence of malice - but reliability is a persistent issue. Data quality is reported, not independently verified.
Calyx VPN includes bridge support via Pluggable Transports, designed to disguise traffic as normal HTTPS to bypass DPI-based blocking - originally funded for use by journalists and activists. This makes it potentially useful in moderately censored environments. However, it lacks advanced obfuscation like Shadowsocks or domain fronting, and there is no evidence it works reliably in high-censorship regions like China or Iran. Given its current instability, it should not be relied upon for critical circumvention.
Calyx VPN is one of the few truly free, anonymous, open-source VPNs from a mission-driven nonprofit - but it may not be operational. Repeated outages, a broken API, and unconfirmed shutdown claims make it unreliable. Use it only if you can verify connectivity, need basic IP masking, and accept that uptime is not guaranteed. It does not pay review sites - its funding comes from donations and memberships.
| Intro price | $0 /mo |
|---|---|
| Notes | The VPN itself costs nothing and has no paid tier: it is funded by donations and memberships to the nonprofit. Membership tiers on calyx.org/membership (fetched 2026-11-03) are for the mobile-hotspot/CalyxOS benefits, not for VPN access: Sustainer $750 first year / $500 thereafter, Contributor $500 / $400, Sprout BYOD SIM $500/yr, Friend-of-Calyx donations from $30. Privacy policy: members may pay by cash or Bitcoin with no personal information retained. |
See the 3-year total next to the marketing number: true-cost calculator →
| Sign up at | calyxinstitute.org |
|---|---|
| Identity check | none - the VPN requires no account, no email and no payment; Calyx memberships (which are donations to the nonprofit, not VPN access) can be paid by cash or Bitcoin with only a membership identifier retained |
| Payment | bitcoin, fiat |
| Apps | android, mac, linux |
Check the renewal price above before any multi-year plan - true-cost calculator.
Legal domicile: United States - The Calyx Institute, a New York 501(c)(3) nonprofit founded 2010, HQ 254 36th Street Suite C660, Brooklyn, NY 11232 (privacy policy fetched 2026-11-03); a Five Eyes jurisdiction; the VPN is one program of the institute alongside CalyxOS and Tor activities. Logging claim: We do not monitor your Internet usage or communications. - evidence class: promise only (no proof). No incidents on file in our research - absence of evidence is not proof of innocence. Facts reported - operator pages (homepage, about, membership, privacy policy fetched live 2026-11-03), 2019 operator news post, F-Droid and OpenAPK app listings, GitLab client README + client privacy policy, GitHub LEAP provider config, TechRadar review, PrivacyProof review, IVPN guide, Wikipedia, Riseup canary, EFF Canary Watch posts all fetched live; Reddit content blocked (HTTP 403) at network level and read via the arctic-shift archive API; the FAUN.dev claim of a January 2026 shutdown returned 403 and is treated as an unverified search-snippet claim (not fully verified) as of 2026-11-03 - read the sources below.
Evidence classes and scoring: methodology · user experiences: meta-review.
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Before you pay: check the renewal price, the refund window, and whether a cheaper or free path covers your use case - the honest checklist.
Based on our checks as of 2026-11-03: Calyx VPN scores 3.6/10 in our weighted review. We logged 4 red flags (listed above). Current status: watch - CalyxVPN is one of the very few genuinely free, genuinely anonymous VPNs - no account, no email, open-source client and server, run by a respected New York privacy nonprofit founded by the man who challenged the FBI's NSL gag order. But it is a small ideological service, not a product: one OpenVPN provider with no published gateway list, mediocre speeds, no streaming, no iOS, and - critically - a shaky uptime record. Users reported outages in late 2023, a certificate-breaking update in Dec 2024, an 'irreversible server outage' in mid-2025, continued connection failures in Aug 2025, and as of 2026-11-03 its Bitmask provider API returns 404 while the operator's homepage still advertises a free VPN; a third-party comparison claims the service went dark around January 2026. Treat it as a privacy community tool that may or may not be up when you need it, and verify connectivity before relying on it. User reports, ownership and the incident record are documented with dated sources in the meta-review below.
A free, open-source OpenVPN service with no accounts, no logs claimed, bridges for obfuscation, and support for Android, Linux, and macOS - though current connectivity is unconfirmed and reliability has been poor.
There is no renewal price or cost - Calyx VPN is entirely free. The `three_year_cash_total` is null; no payment is ever required.
The claim is "policy-only": stated in the privacy policy and F-Droid listing, but unsupported by audits, court tests, or transparency reports. No gateway logs have been proven absent.
It has bridge obfuscation to evade basic DPI, but no proof it works in high-censorship environments. Given its current instability, it’s not recommended for such use.
No payment is needed. For optional memberships, you can pay via Bitcoin or cash with no personal data retained - only a membership ID.
It may already be down - the Bitmask API returns 404s, and reports suggest a January 2026 shutdown. The homepage still advertises it, but no official notice has been posted.
For reliable free service, consider Proton VPN’s free tier (limited, but stable). For low-cost audited options, Mullvad or IVPN offer strong privacy at modest prices.
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