GrizzlyCloud is a simplified VPN alternative for IoT (Internet of Things). Essentially it's just a client-server architecture that forwards your local TCP port requests to appropriate recipient. GrizzlyCloud QT client aims to provide a cross-platform support for those who find it suitable. For everyone there is client in C language.
This library is abandonware and it's only present becase of somebody who's interested in QT implementation. You should use C version instead.