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strongSwan vs ocserv: catalog facts
strongSwan	ocserv
Free Free under GPLv2, with commercial licensing available as an option.	Free Free and open source under GPLv2.
Windows, macOS, Linux, Android, Self-hosted, Command line	Linux, Self-hosted
Thorough IKEv2 implementation with many IETF extensions Runs on Linux, Android, FreeBSD, macOS and Windows	Works with OpenConnect and AnyConnect-compatible clients Radius, OpenID Connect, Kerberos and smart card authentication
Configuration requires solid IPsec knowledge Mainly configured through files and the command line	Linux server only Needs network and authentication setup experience
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License: GPL-2.0	License: GPL-2.0
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.