It's possible to use Vilfo with any VPN provider that offers OpenVPN. However, not all VPN providers are pre-integrated.
A pre-integrated VPN provider means:
You don't need to upload any configuration files to use the provider
Vilfo automatically fetches an updated server list from the provider every day
Using a pre-integrated VPN provider
To use a VPN provider that Vilfo has integrated is dead simple. During the setup of Vilfo, you'll be displayed the list of providers that are currently available. Simply choose the provider.
You can at any time visit the VPN Providers page and add/edit your providers.