123,
If you are working directly with Fannie Mae, you do have to purchase Fannie Mae (Multi-form) software.
I just got a Fannie Mae listing from Old Republic, and they told me that I do not need Muli-form, as this listing is being worked through RESNET (which is a paid membership site). I am already on RESNET, so I do not need to purchase anything else.
Yes, it is an investment to purchase Multi-forms or to join RESNET, but you have to make the decision whether or not to roll the dice.
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REALTORŪ, Broker/Salesperson, GRI, ABR
REO listing/selling since 2004; BPOs