There are many alternatives to Tunnelblick for Mac if you are looking for a replacement. The best Mac alternative is OpenVPN, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Tunnelblick and eight of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Tunnelblick are WireGuard (Free, Open Source), SoftEther VPN (Free, Open Source), Viscosity (Paid) and OpenConnect GUI (Free, Open Source).
WireGuard is an extremely simple yet fast and modern VPN that utilizes state-of-the-art cryptography. It aims to be faster, simpler, leaner, and more useful than IPSec, while avoiding the massive headache. It intends to be considerably more performant than OpenVPN.
Shimo supports every major VPN protocol that is currently available: The widely used CiscoVPN, the very secure OpenVPN and all standard-compliant IPSec connections. It also handles Point-to-Point Tunneling (PPTP) and Layer 2 Tunneling (L2TP) protocols.
This simple tool finds free OpenVPN servers for you and allow you to download the OVPN config file. The extension is written on top of VPN Gate Academic Experiment Project that is an online service as an academic research at Graduate School of University of Tsukuba, Japan.
VPN Tracker is the market leading VPN client for Mac OS X, developed for professional use by consultants and businesses. VPN Tracker supports IPSec VPN, L2TP VPN, PPTP VPN, Cisco Meraki, Cisco EasyVPN, SonicWALL, and other VPN standards.