VPN client for Windows/Mac

We require a VPN client written for Windows aswell as Mac. It should be based on OpenVPN as the protocol, the client could utilize a cross/hybrid platform. Full API with documentation will be provided. 1.1 Login -> 2 Username Password Remember me checkbox 1.2 Register -> 2.1 Username Password Email I agree to the terms of service 2. Home screen Account details (via API) Welcome, $username Expiry date Active subscription (monthly etc) Amount of servers online (clicking here should open #3) Amount of open ports on account Your location + IP should be shown. When connected to the VPN, it should change and say you're protected 2.1 If the user does not have a plan it should show nothing but the plans available pulled from our API. But it should also show if you have a plan so you can extend your plan when you click buy you get directed to browser link. 3. Server selection  List all servers using the API aswell as download the config files from our servers and automatically check for new and updated ones and their country flag + server/city name Sort all servers on region (America, Europe, Oceania etc)  Make a search bar to search for a specific server Display the ping to each server (this could be a manual check by the user, by clicking a refresh button) Clicking one of the servers will open a pop-up with a confirmation asking if you want to connect.  4. Settings Change password or e-mail on account Change the protcol used (UDP/TCP) Enable/disable the ping "check" Enable/disable client logs DNS leak fix (Push a specific dns to the adapter) Copy log file to clipboard or save log file option Connect on startup option Enable/disable notifications