[Chicago] addressbook cleanup software ?

[Lukasz Szybalski]

Hello,
Would anybody know a free software for an address book cleanup that works well?

I have over 18,000 addresses where maybe 4,000 of them are unique.
Everything else is a variation in name: company name vs abbreviated
company name; ave vs avenue; PO vs P.O. vs P O, etc

Any links to software that would do the job automatic or semi automatic.

Thanks,
Lucas



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