OpenConnect Alternatives for Windows
OpenConnect is not available for Windows but there are some alternatives that runs on Windows with similar functionality. The most popular Windows alternative is 
OpenVPN, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to OpenConnect and seven of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to OpenConnect are 
WireGuard (Free, Open Source), 
OpenConnect GUI (Free, Open Source), 
Cisco AnyConnect (Paid) and 
iNinja VPN & Proxy (Free Personal).
- OpenVPN provides flexible VPN solutions to secure your data communications, whether it's for Internet privacy, remote access for employees, securing IoT, or for networking Cloud data centers.
- Freemium • Open Source
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- Cloudron
Does not connect to Cisco ASA. Account required from OpenVPN - WireGuard is an extremely simple yet fast and modern VPN that utilizes state-of-the-art cryptography.
- This is the GUI client for the OpenConnect VPN, an open-source alternative to Cisco AnyConnect.
- VPN software that allows employees to work from anywhere there's Internet access.
- Completely free VPN app, which will ensure the security (confidentiality) of your personal data on the Internet.
- Front End to VPNC, a command line VPN client for Cisco VPN hardware.
- TheGreenBow VPN Client enables to work from home and to connect to enterprise infrastructure. From simple authentication to advanced full PKI integration .Support of both IPsec and SSL.
Is an alternative for Shrewsoft vpn to Pfsense.