http://alexanderdevelopment.net/post/2017/02/05/dynamics-365-configuration-data-mover-v2-0/ Transport configuration data across different CRM organizations while preserving the original record GUID’s, to ensure references do not need to be modified in each environment.
http://www.sonomapartners.com/tools/dynabacus Get the total count of records per entity inside the CRM 2015+ database, or use a view to filter it down to showing the number of records meeting a specific criteria.
http://connect.cowia.com/duplicate-detection-by-cowia/ Configurable duplicate detection tool with bulk merge capability, custom duplicate record views and reporting.
https://crm2103dupedetect.codeplex.com/ Provides the ability to show potential duplicate records on the client side when creating or updating records in CRM 2013 where the previously included platform feature has been removed.
https://crmdatadetective.codeplex.com/ See what fields of an entity are actually being used by examining the population rate.
http://crm2011testingdata.codeplex.com/ Generate test data for any CRM entity with this configurable plugin.