1. ANY OpenVPN-compatible client should be able to connect to any OpenVPN service or server. OpenVPN Connect can connect to community or third-party servers (but it’s of course most convenient with our Access Server or OpenVPN Cloud-generated profiles.) Likewise Tunnelblick and open source clients can connect to Access Server or OpenVPN Cloud.
2. OpenVPN Cloud is our SAAS offering which is gaining in popularity, because it frees the VPN administrator from having to deal with OS and hardware issues on the server. It also provides built-in high availability features.
3. There are third-party distributions of software for Mac OS which provide the community openvpn(8) software. These include Macports and Homebrew.
4. Mac OS is a complete Unix OS, and fully capable of compiling the community openvpn software from source code, if the user is so inclined.
5. The link on our web site, “Comparing OpenVPN Access Server with OpenVPN Community Edition” datasheet, is outdated. Mostly still correct and relevant, but it made no mention of OpenVPN Cloud.
6. If a third-party OpenVPN provider is distributing their own client software, it is based on the GPL community software. To comply with GPL they must also give you access to their source code. If they do not, you should avoid that service and report the GPL violation to us.

Thank you and best regards from OpenVPN, Inc.