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OpenConnect vs NetExtender: catalog facts
OpenConnect	NetExtender
Free Free and open source under the GNU LGPL 2.1.	Free The client is a free download; it requires access to a SonicWall firewall.
Linux, Command line	Windows, Linux
Works with many vendors' SSL VPN servers Supports certificates on TPMs and PKCS#11 smartcards	Gives remote users access to network drives and internal applications Windows and Linux builds available
Command-line tool; graphical use depends on separate front ends Not supported by the VPN vendors themselves	Only useful with a SonicWall appliance Older versions require a MySonicWall login to download
Downloadable app	Downloadable app
Open source	Closed source
License: LGPL-2.1	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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