swing can

Family can create family trees in the most intuitive way.

NTFS-3G can read-write NTFS filesystem driver.

An Xbox Live client that can check what are your Xbox friends doing

You can create encrypted volumes with OSXCrypt.

EPSQLPlugIn can display previews of EPS files.

You can connect your Newton device to your Mac with Newton Connection.

Organizations can easily migrate critical client-server applications to the web.

Stronghold can keeps data safe under 448-bit blowfish encryption.

You can adds functionality to iWeb with iTweak.

Netrix is a free tetris clone which you can play in either single or multiplayer