Shimo is the most versatile VPN client for OS X and it enables really everybody to master secure network.
NCP Secure Entry Client for communication with any IPsec gateway (e.g. Cisco, Juniper, Microsoft). Can be installed on any Windows operating systems in 32 / 64 bit including Windows 10 and has many additional functionalities.
NCP Secure Entry CE Client for communication with any IPsec gateway (e.g. Cisco, Juniper). The Client supports Windows CE, incl. Mobile 5 + Mobile 6. It also has additional security features like an integrated firewall.