I'm pretty sure you can use any software to connect to Totalvpn (including built-in software with your OS). However, the Totalvpn software comes with a really handy feature -- the Kill Switch. This will disable your internet connection when connectivity to the VPN is lost.
I wasn't using the kill switch at first. One day I realized that the VPN got disconnected, yet I was still torrenting like a madman. I turned on the kill switch feature and haven't looked back. Has saved me countless times.
You can setup a kill switch outside of the total vpn software, but it's not very easy. i l say totalvpn is the Best Torrent VPN Service Provider