License

Open-source License

strongSwan is an open-source project distributed under the GPLv2 license. We think the open source model has several advantages over a proprietary product:

• You can review the code, which is of utmost importance in security software.
• You can contribute to fix or improve the software.
• You can use the software for free. This allows more users to try and use it, giving feedback and further improve its quality.

We strongly believe in open source and will always distribute strongSwan under a GPL license.

Commercial License

A commercial, non-GPL license is available from secunet Security Networks AG for most of the components of the strongSwan project (see our docs for a list of GPL-only components).

Optionally, and only in addition to the license, commercial support is available in two levels of response time / SLA, if you have any problem to solve by strongSwan developers.

Please contact us at info@strongswan.org if you are interested or have any questions.