Do you know any control panel for providing VPN services?

Question

VPN

Hello,
I am looking for a control panel to manage the provision of VPN services.
Do you know any ready-made solutions?
Required:
- personal account
- billing
- traffic accounting
- limits
Interested in a ready-made solution.
PS I saw a similar question was already asked two years ago , but there is no answer there.

Answer 1

look at the github there it was under openvpn like