Libreswan

Libreswan is a free software implementation of the most widely supported and standardized VPN protocol

Free software · libreswan.org

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What Libreswan’s own pages say

What it says it doesLibreswan is a free software implementation of the most widely supported and standardized VPN protocol libreswan.org
PlatformsApple OSX, FreeBSD, Linux libreswan.org
Open sourceYes libreswan.org
LicenseLibreswan is licensed under the GNU Public License (" GPLv2 "). libreswan.org

Each value is a quote AirStack found on the product’s own pages, read 2026-11-05. A missing field means AirStack has not found it on its pages.