Side by side
OneMerge vs Splink
Both stand on data deduplication software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Web
OneMerge pairs automated duplicate handling with a review path and recorded, reversible outcomes. The free edition has notable limits, so teams needing real-time automation or cross-object merges will need to consider a paid plan.
Visit OneMerge Free plan LinuxSelf-hosted
Splink provides flexible record linkage for datasets with useful structured fields, from laptop-scale work to big-data backends. Its input-data requirements make it a poor fit for matching a lone text column.
Visit SplinkThe facts
| OneMerge | Splink | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web | Linux, Self-hosted |
| Lowest paid plan | See the plans | Free or on request |
| Plans published | 2 | 1 |
| Maker | Not published | Not published |
| Website | onemerge.co.uk | github.com |
| On data deduplication software | #10 of 27 | #14 of 27 |
OneMerge: what it does well
- Rules can weigh recency, quality, or trust
- Exceptions can go to human review
- Merge outcomes are auditable and reversible
- Runs within the customer's Salesforce org
- Complimentary QuickStart session for all customers
What to know first
- Free Edition supports scheduled merges only
- Free Edition limit is 50,000 records per merged object
- Free Edition excludes real-time automation and custom merge
- Trial lasts 7 days
Splink: what it does well
- Trains models without training data.
- Supports term-frequency adjustments and fuzzy logic.
- Offers DuckDB, Spark, PostgreSQL, and SQLite backends.
- Interactive outputs help diagnose linkage problems.
- Free software under the MIT license.
What to know first
- Requires Python 3.10 or later.
- Not designed for a single bag-of-words column.
- Works best with standardised, multiple-column data.
Alternatives to OneMerge Alternatives to Splink The whole list