Tunnelblick 3.3.4 - For use on OS X 10.4 - 10.8 ("Tiger", "Leopard", "Snow Leopard", "Lion", and "Mountain Lion"), Intel or PowerPC, 32- or 64-bit.

Tunnelblick 3.4Beta34 - For use on OS X 10.4 - 10.10 ("Tiger", "Leopard", "Snow Leopard", "Lion", "Mountain Lion", "Mavericks", and "Yosemite"), Intel or PowerPC, 32- or 64-bit.