Compare software

OpenConnectopenfortivpn
Free

Free and open source under the GNU LGPL 2.1.

 Free

Free and open source under GPL-3.0-or-later with the cryptsetup OpenSSL exception.

Linux, Command line Linux, Command line
  • Works with many vendors' SSL VPN servers
  • Supports certificates on TPMs and PKCS#11 smartcards
  • Works with Fortinet VPN services
  • Supports SAML login and user certificates
  • Command-line tool; graphical use depends on separate front ends
  • Not supported by the VPN vendors themselves
  • Requires pppd
  • Smartcard support needs additional software and does not support multiple readers
Downloadable app Downloadable app
Open source Open source
License: LGPL-2.1 License: GPL-3.0-or-later WITH cryptsetup-OpenSSL-exception
No account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked October 8, 2026

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