ASK Duplication Check: Having a multiple users keying-in data will always have a chance of data duplication. This is inherited in any database and that is why to root out the potential mess ASK Distribution have introduced Duplication Check. This tool searches for potential duplicates of Accounts records and give the user the option of merging fields and links of those records. Free trial.
) "Duplication Check for Microsoft CRM - Click to enlarge screenshot")