OpenZiti is promising but their desktop and mobile clients are very incomplete.
The feature set varies greatly between platforms.
If you are supporting a single platform (example desktop windows) it could work. Even better if you have the resources to write your own clients using the SDK, like it's meant to be.
The feature set varies greatly between platforms.
If you are supporting a single platform (example desktop windows) it could work. Even better if you have the resources to write your own clients using the SDK, like it's meant to be.