What the evidence decides
Pricing
Tie on free tier
Both sides document the same value.
Pricing
Tie on public list price
Both sides document the same value.
Attribute by attribute
Pricing
Entry price per month (USD)
Not yet verified
Proton VPN
Not yet verified
Not yet verified
Tailscale
Not yet verified
not measured on at least one side
Free tier
Yes
Proton VPN
Verified90
Yes
Tailscale
Verified90
Tie
Sources for this row
Proton VPN:
protonvpn.com (tier 1), retrieved 2026-09-02
Tailscale:
tailscale.com (tier 1), retrieved 2026-09-02
Free trial length (days)
Not yet verified
Proton VPN
Not yet verified
14 days
Tailscale
Verified90
no directional preference
Sources for this row
Tailscale:
tailscale.com (tier 1), retrieved 2026-09-02
Public list price
Yes
Proton VPN
Verified90
Yes
Tailscale
Verified90
Tie
Sources for this row
Proton VPN:
protonvpn.com (tier 1), retrieved 2026-09-02
Tailscale:
tailscale.com (tier 1), retrieved 2026-09-02
Security and compliance
Audit log of agent actions
Not yet verified
Proton VPN
Not yet verified
Not yet verified
Tailscale
Not yet verified
not measured on at least one side
Data processing agreement offered
Not yet verified
Proton VPN
Not yet verified
Yes
Tailscale
Verified90
not measured on at least one side
Sources for this row
Tailscale:
tailscale.com (tier 1), retrieved 2026-09-02
FedRAMP authorisation
Not yet verified
Proton VPN
Not yet verified
Not yet verified
Tailscale
Not yet verified
not measured on at least one side
GDPR compliance stated
Not yet verified
Proton VPN
Not yet verified
Not yet verified
Tailscale
Not yet verified
not measured on at least one side
HIPAA compliance stated
Not yet verified
Proton VPN
Not yet verified
Yes
Tailscale
Verified90
not measured on at least one side
Sources for this row
Tailscale:
tailscale.com (tier 1), retrieved 2026-09-02
ISO/IEC 27001
Not yet verified
Proton VPN
Not yet verified
Not yet verified
Tailscale
Not yet verified
not measured on at least one side
PCI DSS stated
Not researched
Proton VPN
Not yet verified
Yes
Tailscale
Verified90
not researched on at least one side
Sources for this row
Tailscale:
tailscale.com (tier 1), retrieved 2026-09-02
SOC 2 Type II
Not yet verified
Proton VPN
Not yet verified
Yes
Tailscale
Verified90
not measured on at least one side
Sources for this row
Tailscale:
tailscale.com (tier 1), retrieved 2026-09-02
Platform and integration
Public API
Not yet verified
Proton VPN
Not yet verified
Not yet verified
Tailscale
Not yet verified
not measured on at least one side
Mobile app (iOS or Android)
Not yet verified
Proton VPN
Not yet verified
Not yet verified
Tailscale
Not yet verified
no directional preference
SCIM user provisioning
Not yet verified
Proton VPN
Not yet verified
Yes
Tailscale
Verified90
not measured on at least one side
Sources for this row
Tailscale:
tailscale.com (tier 1), retrieved 2026-09-02
Single sign-on
Not yet verified
Proton VPN
Not yet verified
Yes
Tailscale
Verified90
not measured on at least one side
Sources for this row
Tailscale:
tailscale.com (tier 1), retrieved 2026-09-02 · tailscale.com (tier 1), retrieved 2026-09-02 · tailscale.com (tier 1), retrieved 2026-09-02
Uptime commitment (%)
Not yet verified
Proton VPN
Not yet verified
Not yet verified
Tailscale
Not yet verified
not measured on at least one side
A missing measurement never counts
against a product. If we could not reach a document, that is a fact
about our research and not about the vendor. Open a row to see the
source, its tier and the day we read it.