dedupe

dedupe is ranked #18 of 27 in data deduplication software on The Geeks Club. It runs on API, Linux, macOS, Self-hosted, Windows.

Compared on data deduplication software

Fuzzy matching: Yes
API access: Yes

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dedupe

Product status: Dedupe.io was shut down on January 31, 2023; its team says it now focuses on consulting through DataMade.
Open source library: dedupe is a Python library that uses machine learning for fuzzy matching, deduplication and entity resolution on structured data.
Training: The library uses human-labeled examples to learn rules for finding similar records, including in very large databases.
Use cases: The project describes using dedupe to remove duplicate spreadsheet entries, link customer and order records without unique IDs, and identify people across campaign contribution records.
Features: The documentation lists machine learning from labeled data, laptop execution, library integration, extensible data types and comparators, and open-source licensing as features.
Installation: The documented installation command is `pip install dedupe`.
Self-hosting: The developer page says Python developers can run the library on local machines or servers and build self-hosted entity-resolution pipelines.
API: The former Dedupe.io web API supported matching and training against projects through REST calls, including incremental checks, matches and additions after deduplication.
Integrations: The project describes dedupe as a library that can be integrated into applications or import scripts; it also documents CSV deduplication through the separate csvdedupe command-line tool.
Web service workflow: The former Dedupe.io service described a workflow to upload data, train a model, review automatically found matches, and download results.
Data formats: The former service’s FAQ says uploads accepted Excel spreadsheets and CSV files, with one record per row and column names in the first row.
Training limit: The former service required at least 10 positive and 10 negative record-pair examples during training.
Privacy: The former service’s FAQ says its privacy policy prohibited renting or selling user data and third-party access without signed consent, and limited company access to debugging and service improvement.
Compliance: The former service’s FAQ states it was certified compliant with FERPA as of July 2019.

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Where it ranks on The Geeks Club

Best Data Deduplication Software in 2026#18 of 27

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Sources

dedupe.io· checked 4 Oct 2026
github.com/dedupeio/dedupe· checked 4 Oct 2026
docs.dedupe.io/en/latest/· checked 4 Oct 2026
dedupe.io/developers/· checked 4 Oct 2026
dedupe.io/documentation/faq· checked 4 Oct 2026