WireGuard - Fast, Modern, Secure VPN Tunnel
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
OpenVPN - OpenVPN - The Open Source VPN
Nintex - Cloud-based digital workflow management automation platform
Tunnelblick - free software for OpenVPN on OS X and macOS
ProcessMaker - ProcessMaker is an easy to use BPM and workflow software solution. It is used to design, automate, and deploy business processes of any kind.