Older Versions of 1Password
Starting in 1Password 3.6, the minimum system version required is Mac OS X 10.6 (Snow Leopard).
If you are on 10.4 or 10.5, you can download one of the versions below. While we are happy to help if you have problems using these older releases, new features will not be added so it is recommended you upgrade to a newer version of OS X as soon as possible.
1Password 2 for Mac OS X Tiger (10.4)
1Password 2.12.1 was the last version to support Tiger. Download
Note that 1Password 2 is free for 1Password 3 owners. In other words, 1Password 3 licenses will work in 1Password 2.
1Password 3 for Mac OS X Leopard (10.5) and Older Browsers
1Password 3.6.0 added support for OS X 10.7 (Lion), replacing OS X 10.5 (Leopard) support. The last supported version for Leopard is 1Password 3.5. Download.
Firefox 3, Camino 2, Flock and Older Browsers
1Password 3.5 was the last version to support Camino 2, Firefox 3, and Flock. Download