ShrewSoft VPN Client is not available for Mac but there are plenty of alternatives that runs on macOS with similar functionality. The best Mac alternative is SoftEther VPN, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to ShrewSoft VPN Client and 13 are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to ShrewSoft VPN Client are Tunnelblick (Free, Open Source), sshuttle (Free, Open Source), OpenConnect GUI (Free, Open Source) and OpenVPN Finder (Free, Open Source).
sshuttle: where transparent proxy meets VPN meets ssh sshuttle is the only program that solves the following common case: Your client machine (or router) is Linux, FreeBSD, or MacOS. You have access to a remote network via ssh.
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.
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.
Avira Phantom VPN encrypts your connection, enabling you to evade hackers on public WiFi hotspots. It also keeps your web interactions private and bypasses geo-restricted content so that you can enjoy your favorite shows anywhere you are.
Turbo VPN is an unlimited VPN (Virtual Private Network) proxy with no registration needed. Features: *Super Fast Speed - Turbo VPN detects your location automatically and connects you to the nearest and fastest server. You will be super faster with the best servers.
iVPN is an application that makes use of the standards based PPTP and L2TP VPN server installed with Mac OS X. This VPN server is usually only available on Mac OS X Server and configured through the Server Admin application.