Tunnelblick 3.1 and 3.0 run on OS X 10.4 through 10.6 ('Tiger', 'Leopard', and 'Snow Leopard'). It may or may not work for you on OS X 10.8 or 10.9 ('Mountain Lion' or 'Mavericks'). Tunnelblick 3.2 runs on OS X 10.4 through 10.7 ('Tiger', 'Leopard', 'Snow Leopard', and 'Lion'). Tunnelblick 3.3 runs on OS X 10.4 through 10.8 ('Tiger', 'Leopard', 'Snow Leopard', 'Lion', and 'Mountain Lion'). Tunnelblick 3.4 runs on OS X 10.4 through 10.9 ('Tiger', 'Leopard', 'Snow Leopard', 'Lion', 'Mountain Lion', and 'Mavericks'). Tunnelblick 3.5 runs on OS X 10.5 through 10.11 ('Leopard', 'Snow Leopard', 'Lion', 'Mountain Lion', 'Mavericks', 'Yosemite', and 'El Capitan').
Tunnelblick 3.6 runs on OS X 10.7 through macOS 10.12 ('Lion', 'Mountain Lion', 'Mavericks', 'Yosemite', 'El Capitan', and 'Sierra'). No additional installation is necessary - just add your configuration and encryption information. Tunnelblick comes as a ready-to-use application with all necessary binaries and drivers (including OpenVPN and tun/tap). Note: To use Tunnelblick you need access to a VPN server - your computer is one end of the tunnel and the VPN server is the other end.
