I use 1 Pw on my intel Macs and my iOS devices. How do I use it on my old PPC macs?
Well we're going to have to delve into the archives to help you with that one The last version that supported the Power PC architecture was version 3.5.15 which we released back in September of 2011. Here's a link to that version of 1Password 3.
Now just to warn you, it may look pretty different from what you're using elsewhere and could very well be missing features. I also know from another recent thread that the last compatible version of Safari doesn't work with extensions so if you want to use the 1Password 3 Browser extension you'll want to consider Firefox 3.6.28. I believe it should work but I don't have a compatible machine to confirm with I'm afraid.
If you have any follow up questions do please ask.