Outlook Contact Scrubber
I synced my pda with my new laptop and somehow managed to duplicate a lot of my contacts. I had been meaning to get to tidying it up but just hadn’t made the time. A few days ago I tried to get my old LG phone to sync with Outlook, and the rubbish sync software crashed twice during the sync. both times created all my phone contacts in Outlook before crashing. My contacts were a mess. This freebie we found on a quick Google search – Outlook Contacts Scrubber – is a gem. The user interface is very clunky, but bear in mind it’s free. The preferences let you choose how you want to dedupe, with some advanced options disabled unless you buy the premium version. The software confirms each merge and lets you tweak the actions it will take by selecting which fields to keep in the merge. If you have a big old collection of contacts like I had, this tool is worth a look
This app is not so free any more, it’s gone commercial and costs $50 USD now