1.VpnAPI

It seems like you might be asking for a VPN API, which stands for "Virtual Private Network API." A VPN API is a service provided by a network to encrypt internet traffic for a specific client or organization. Here are a few popular VPN APIs available for download: Visit VpnAPI's website for a wide range of VPN services and APIs.

2. OpenVPN API
   [OpenVPN's official API](https://open vwsn.org/api/) allows you to integrate OpenVPN into your own applications.

3. VpnService
   VpnService offers various VPN services and APIs.

If you're looking for a specific type of VPN API, please provide more details, and I can offer more tailored advice!