Shimo is described as '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' and is a VPN service in the network & admin category. There are more than 10 alternatives to Shimo for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Shimo alternative is SoftEther VPN, which is both free and Open Source. Other great apps like Shimo are Amnezia VPN, Tunnelblick, Cisco AnyConnect and OpenConnect.
Does not connect to Cisco networks with groups