Use Firezone to manage secure remote access to applications in your private cloud, funnel traffic through a single egress gateway for your team, establish a reverse tunnel to a host behind NAT, or simply ensure that the first hop from your teams' laptops is encrypted when connecting from untrusted cafe and airport WiFi.
OpenVPN Manager - OpenVPN Manager is a tool which controls OpenVPN.
OpenVPN - OpenVPN - The Open Source VPN
Viscosity - Viscosity is a VPN client for Mac OS X and Windows.
Tunnelblick - free software for OpenVPN on OS X and macOS
PaladinVPN - PaladinVPN is one of the best virtual private network services to protect all data you receive or send over the internet.
fruho - fruho is an open-source, zero-configuration VPN manager.