Xmarks for Safari
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Full user review
"If you are still on a PPC, DON'T!"
Works just fine on an intel machine.
v.1.4 doesn't work at all on a PPC. If you, like me, still run an older PPC with OS 10.5, dont install XMarks 1.4 or 1.4.1. They don't work on a PPC. LastPass even asked me to test 1.4.1 for them because they no longer even have a PPC. I told them it didn't work, but they released it anyway. If you contact them, they will send you a copy of 1.3.5, which still works.
Apart from occasional server downtime, it works just fine.