Business Directory Software - Recommendations Needed

[izopod]

Does anyone know where I can find affordable Directory Software? Right now the cheapest I found was eDirectory.com at $150 a month for their solution. What I'm looking to put up is a site where individuals can list their business, upload pictures of themselves and have their location w/map to their business included.

Basically what I'm asking is what is everyone using for their directory sites?

thanks in advance for any help you can provide!