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ocserv vs Libreswan: catalog facts
ocserv	Libreswan
Free Free and open source under GPLv2.	Free Free software under GPLv2.
Linux, Self-hosted	macOS, Linux, Command line
Works with OpenConnect and AnyConnect-compatible clients Radius, OpenID Connect, Kerberos and smart card authentication	Standards-based IPsec with IKEv1 and IKEv2 Packaged in Fedora, RHEL/EPEL and Arch Linux
Linux server only Needs network and authentication setup experience	IPsec configuration has a steep learning curve No graphical interface
Self-hosted	Downloadable app
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.