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Libreswan vs SoftEther VPN: catalog facts
Libreswan	SoftEther VPN
Free Free software under GPLv2.	Free Free and open source under the Apache license.
macOS, Linux, Command line	Windows, macOS, Linux, Self-hosted
Standards-based IPsec with IKEv1 and IKEv2 Packaged in Fedora, RHEL/EPEL and Arch Linux	Multi-protocol server covering many VPN setups SSL-VPN that passes through restrictive firewalls
IPsec configuration has a steep learning curve No graphical interface	Configuration has many options and a learning curve Documentation site looks dated
Downloadable app	Downloadable app, Self-hosted
Open source	Open source
License: GPL-2.0	License: Apache-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.