Hi,
1. Google Local:
https://www.google.com/local/add/
2. Yahoo Local:
Yahoo! Local Features — Overview
3. InfoUSA (Free)
4. Superpages.com (Free and paid)
5. Yellowpages.com (Free and Paid)
6. True Local (free and Paid)
7. Local.com (free and paid)
8. Localeze (Free and Paid)
9. Yellowbot (Free)
10. Insider Pages (free and paid)
11. Tupalo (Free)
12. Ibegin (free)
13. Metrobot (free)
14. USA-Local-Search.com (Free)
15. Anywho (Affiliate of Yellowpages.com)
16. Bigbook (Affiliate of Superpages)
17. Webfetch (Affiliate of Superpages)