SoftEther
One server that speaks many VPN protocols at once.
How widely is it used?
Used for specific scenariosPopular in academic and mixed-client environments; rare in new commercial builds.
How it works
A multi-protocol server that can simultaneously accept its own HTTPS-based protocol plus OpenVPN, L2TP/IPsec and SSTP clients, and can bridge layer 2 between sites.
Connects
Device/network → SoftEther server
Protocols
SoftEther, OpenVPN, L2TP/IPsec, SSTP
Typical users
Universities, Mixed-client environments
Main use case
Serving many different clients from a single gateway.
Advantages
- Broad client compatibility
- Layer-2 bridging built in
- Good NAT traversal
Limitations
- Large codebase to trust and patch
- Smaller community than OpenVPN