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Best Data Deduplication Software in 2026

Duplicate records can make sales and CRM data harder to maintain, so these tools focus on finding overlaps and deciding how they should be handled. Compared on fuzzy matching, automatic merging, duplicate prevention, and merge review workflow, the entries offer criteria for weighing detection and oversight needs. CRM integrations and API access can help you assess how an option fits your existing systems; free-plan availability and the paid-from price add cost context. Tilores, Plauti Deduplicate, and Zingg are among the tools shown. Consider how much review your team wants before records change, and which integration and matching capabilities matter for your data.

  1. 1

    Zingg

    Free plan Open source APILinuxMac+1
    8.5 Free plan Visit site
  2. 2

    DupeCatcher

    Free plan AndroidiPhoneWeb

    Choose DupeCatcher if your Salesforce organization needs real-time duplicate prevention or alerts across supported record types, with customizable matching rules and a free plan.

    7.3 Free plan Visit site
  3. 3

    dedupe

    Free plan APILinuxMac+2

    dedupe offers an open-source library for developers building structured-data matching and deduplication workflows. Do not confuse it with Dedupe.io, which shut down in 2023.

    7.2 Open source Visit site
  4. 4

    Entify

    Free plan APISelf-hostedWeb

    Choose Entify if you need a free, open-source tool for record matching with explainable review and local operation.

    7.2 Open source Visit site
  5. 5

    Plauti Deduplicate

    Free plan APISelf-hostedWeb

    Plauti Deduplicate offers configurable matching and a choice between scheduled merges and review, with tools for Salesforce and Dynamics 365 teams.

    7.1 Free plan · 14-day trial Visit site
  6. 6

    pyJedAI

    Free plan LinuxSelf-hostedWindows

    pyJedAI provides documented workflows for entity resolution, schema matching, and geospatial interlinking. Check the Python and Windows prerequisites before installation.

    7.0 Open source Visit site
  7. 7

    Senzing Entity Resolution

    Free plan APILinuxMac+3

    Senzing combines record resolution with relationship mapping and decision audit trails, with deployment options ranging from local infrastructure to major cloud environments.

    7.0 Visit site
  8. 8

    Tilores

    Free plan APILinuxMac+3

    Tilores focuses on reconciling records with configurable matching and multiple deployment choices. The free local mode has a defined record cap, while production pricing depends on a custom quote.

    7.0 Free plan · pricing on request Visit site
  9. 9

    Koalify

    Free plan Web

    Koalify is focused on duplicate management inside HubSpot, with automatic and manual merge paths. The free tier has account and record limits, while Pro pricing depends on record volume.

    6.9 Free plan · paid from $25/mo (annual) Visit site
  10. 10

    OneMerge

    Free plan Web

    OneMerge pairs automated duplicate handling with a review path and recorded, reversible outcomes.

    6.8 Free plan · paid from $135/mo (annual) · 7-day trial Visit site
  11. 11

    Python Record Linkage Toolkit

    Free plan LinuxSelf-hosted

    The toolkit provides a complete record-linkage workflow, from candidate generation through evaluation, and allows custom methods.

    6.8 Free plan Visit site
  12. 12

    R

    by R
    Free plan MacWindows

    R combines statistical computing, graphics, and scripting in a free environment, with support for a broad range of data formats and platforms.

    6.8 Free plan Visit site
  13. 13

    DemandTools

    Free plan Windows

    DemandTools brings duplicate cleanup, bulk updates, monitoring, and email verification to Salesforce data management.

    6.7 Free plan Visit site
  14. 14

    Splink

    Free plan LinuxSelf-hosted

    Splink provides flexible record linkage for datasets with useful structured fields, from laptop-scale work to big-data backends.

    6.7 Free plan Visit site
  15. 15

    DataMatch Enterprise

    Free trial APILinuxSelf-hosted+2

    Choose DataMatch Enterprise if you need code-free data profiling and cleansing alongside configurable matching and deduplication across sources.

    6.5 Pricing on request Visit site
  16. 16

    DQE One Unify

    Free trial APISelf-hostedWeb+1

    DQE One Unify combines duplicate cleanup with checks to prevent new duplicate records. Review the trial caps and deployment model before settling on an implementation.

    6.4 Pricing on request · 30-day trial Visit site
  17. 17

    Cloudingo

    Free trial APIWeb

    Cloudingo combines duplicate detection, automated merging, prevention and restoration for Salesforce and Marketo data.

    6.3 From $2,500 · 10-day trial Visit site
  18. 18

    Data8 Duplicare

    Free trial WebWindows

    Duplicare offers several ways to find and manage duplicate Dynamics 365 records, including scheduled batch work and rule-based background merges.

    6.2 From £60 · 14-day trial Visit site
  19. 19

    DataGroomr

    Free trial APIWeb

    DataGroomr brings deduplication, verification, import checks, and workflow automation together for Salesforce data.

    6.2 14-day trial Visit site
  20. 20

    MatchCore

    Free trial APILinuxMac+3

    Choose MatchCore if your team needs configurable record matching, cleansing, and golden-record assembly across customer, vendor, or product data.

    6.2 From $417/user/mo (annual) · 14-day trial Visit site
  21. 21

    AWS Entity Resolution

    Paid APIWeb

    AWS Entity Resolution provides several approaches to matching records, plus incremental rule-based processing and API lookup.

    5.8 From $0.10 Visit site
  22. 22

    Insycle

    Free trial Web

    Insycle combines CRM cleanup and standardization tools with monitoring for coverage and drift. Consider the connected database record count and module allowances when assessing its paid plans.

    5.8 From $100/mo (annual) · 14-day trial Visit site
  23. 23

    Workbooks

    by Workbooks
    Free trial WebiPhoneAndroid

    Workbooks combines CRM capabilities with additional business functions as plans move up the range. It has a 30-day free trial, but no free plan; listed subscriptions are billed annually.

    5.7 Free plan · paid from $47/user/mo (annual) · 30-day trial Visit site
  24. 24

    Posidex Customer Entity Resolution and Matching

    Paid APILinuxMac+3

    Choose Posidex Customer Entity Resolution and Matching if your organization needs configurable record matching, identity validation, and customer search across enterprise systems.

    5.6 Pricing on request Visit site
  25. 25

    LinkTransformer

    Paid

    Choose LinkTransformer if you need a Python package for record linkage or related dataframe work and want to train or share models.

    4.8 Open source Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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