Looking for 3rd party schematic symbol editors

Since Mentor has chosen to ignore this area for the netlist flow, we're looking to see if there are any 3rd party schematic symbol editors out there.

Some key requirements:

Able to mine PDF component specifications to get the Pin/Pin number data.

Able to create fractured parts.

Able to check and make sure all pins are accounted for.

Able to check for duplicate pins.

Thanks,

Tony