Pritunl-client-electron is an open source openvpn client. Documentation and more information can be found at the home page client.pritunl.com
If the Pritunl package is currently installed run the uninstall command below. Requires homebrew with git, go and node.
brew install git go node
bash <(curl -s https://raw.githubusercontent.com/pritunl/pritunl-client-electron/master/tools/install_macos.sh)bash <(curl -s https://raw.githubusercontent.com/pritunl/pritunl-client-electron/master/tools/uninstall_macos.sh)