Free filesystem drivers for ext3 on OS X Leopard

Solution 1:

There is this discussion at InsanelyMac -- Mount ext3 partitions in OS X
Another discussion at MacRumors -- Anybody understand how ext2fsx works?

  1. Get ext2fsx from Sourceforge

    • Mount as ext2

    mount -t ext2 /dev/disk0s3 /Volumes/linux1

Update: Check reference by Mikko in the other answer -- fuse-ext2

Solution 2:

Use FUSE for OS X and the fuse-ext2 module to read and write ext2 and ext3 systems.