openvpn is in homebrew. So you should be able to install via "brew install openvpn". OpenVPN isn't natively supported in Apples OSs. The clients are going to need third party software to connect. Tunnelblick on the Mac is free. There are other clients.

How to set up OpenVPN on Mac OS X - A popular open source OpenVPN client for OS X is Tunnelblick. Tunnelblick is released under the GNU General Public License (GPL) and as such all the source code is available. I went ahead and downloaded the latest source repository to take a look. Technically, Tunnelblick is a Graphical User Interface (GUI) that interfaces with the OpenVPN code. Mac OS X OpenVPN Issue - OpenVPN Support Forum Oct 17, 2014

How To Uninstall OpenVPN (OS X) from Mac OS

As the market leading VPN solution for the Mac, you can securely manage IPSec, PPTP, OpenVPN, and L2TP VPN connections directly on your Apple Mac OS X. VPN Tracker sets high standards and meets the expectation of US security and goverment agencies such as the NSA or CIA and is used by security relevant administrative authorities. #1249 (PKCS#11 (OpenSC) not working with OpenVPN on Mac … PKCS#11 (OpenSC) not working with OpenVPN on Mac OS X. Reported by: squeezy: Owned by: Priority: major: Milestone: Component: Generic / unclassified: Version: OpenVPN 2.4.6 (Community Ed) Severity: Not set (select this one, unless your'e a OpenVPN developer) Keywords: Cc:

Apr 07, 2020

Jul 22, 2020 OpenVPN — OpenVPN Client Installation — Mac OSX Clients Apr 07, 2020 OpenVPN 64-bit client with macOS Catalina | Scripting Library Oct 09, 2019 Connect VPN using OpenVPN on MAC OS X - YouTube