Protocol
Providers that offer SSTP, a Microsoft transport that survives mostly on Windows.
SSTP is a Microsoft tunnel from 2007 that carries PPP over TLS on port 443, so it passes most firewalls as ordinary HTTPS traffic. It is native on Windows and rare anywhere else.
On security the transport is TLS, which is sound, and the result compares with OpenVPN’s TCP mode. What sets it apart is ownership: the specification is Microsoft’s, the main implementation is closed, and it has had little independent review outside Windows. It is a reasonable choice where it works and a weaker one to depend on.
SSTP
More protocols
Four of the twelve terms — obfuscated, proprietary, vendor_open, wireguard_derived — are categories rather than protocol names: each says a protocol was disguised, closed or built on another, not which one it is. A record that publishes no protocol list at all appears on none of these pages (sixteen on file).
Coverage57countries
Paying monthly$11.99monthly
Paying yearly$54.99yearly total
Free tierYeslimited free plan
Devices10at once
Security
Usability
Coverage25countries
Paying monthly$15.00monthly
Paying yearly$70.00yearly total
Free tierNopaid plans only
Devicesunlimitedat once
Security
Usability
Coverage—not published
Paying monthly$9.99monthly
Paying yearly$59.99yearly total
Free tierNopaid trial only
Devices8at once
Security
Usability
Coverage14countries
Price—no published price
Free tierYesfree, no data cap
Devicesunlimitedat once
Security
Usability