Professional VPN application (Software) for Windows

We are VPN provider and need an Windows VPN application with the following features: - Supports PPTP, L2TP, SSTP, SoftEther, OpenVPN (UDP - TCP - Auto) - Speed test (Speed Meter): ping, download & upload. Something like [login to view URL] - Port check: Use can check any ports number if open from server-side or not - Auto connect/port detector: App must search what VPN protocol's port is open in client's ISP and connect to that protocol automatically - DNS Leak Protection - IPV6 Leak Protection - Data compression - Notification (includes 2 type: account expiry notification and news&offers) - Compatible with all Windows versions - Auto update - IP Binding capability (Secure IP Bind enables you to force selected applications on your computer to only work once connected to our VPN servers. This ensures selected applications will only work behind a secure encrypted connection. If you open selected applications without being connected to our VPN, they won't be able to access the internet.) - Kill Switch (In case of an unwanted VPN disconnection normally your traffic would be exposed again. But when you enable Kill Switch, once the disconnection happens, it automatically closes all applications that are running at the time and have been previously added to the Kill Switch app list.) - Split Tunneling (lets you run VPN on your selected application or url. Rest of the traffic will pass throught your ISP) - Source code is required