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Top 23 Python Data Validation Projects
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cleanlab
Cleanlab's open-source library is the standard data-centric AI package for data quality and machine learning with messy, real-world data and labels.
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SaaSHub
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Project mention: Framework de Tests Automatisés API avec Pytest: Tutoriel Pratique | dev.to | 2026-05-22
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deepchecks
Deepchecks: Tests for Continuous Validation of ML Models & Data. Deepchecks is a holistic open-source solution for all of your AI & ML validation needs, enabling to thoroughly test your data and models from research to production.
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Project mention: Show HN: Data contracts engine for the modern data stack | news.ycombinator.com | 2026-01-28
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Project mention: Programmers and software developers lost the plot on naming their tools | news.ycombinator.com | 2025-12-11
When I told a co-worker about https://pypi.org/project/voluptuous/ he immediately searched for the name alone, then told us not to do the same.
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Project mention: Show HN: Dingo 1.9.0 released: With enhanced hallucination detection | news.ycombinator.com | 2025-07-31
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GitHub: github.com/posit-dev/pointblank (star the repo, file issues, contribute!)
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opendataeditor
The Open Data Editor (ODE) is a no-code application to explore and validate tabular data in a simple way. Forever free and open source project powered by the Frictionless Framework.
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python-codicefiscale
:it: :credit_card: italian fiscal codes encoding, decoding and validation - codifica, decodifica e validazione del Codice Fiscale italiano.
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snowflake-provisioning
Snowflake Database, Schema, and Warehouse provisioning with Access Roles & Generating and Provisioning of Functional Roles & Snowflake Source Export, Snowflake cloning, and data tieout tool
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OpenDQV
Open-source, contract-driven data quality validation. Shift-left enforcement at the point of write — before data enters your pipeline.
Project mention: OpenDQV – open-source data quality validation at the point of write | news.ycombinator.com | 2026-03-20 -
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validatelite
ValidateLite: A lightweight CLI for database schema validation and data quality checks. Ideal for CI/CD, ETL, and data pipelines.
Project mention: DevLog #1 - ValidateLite: Building a Zero-Config Data Validation Tool | dev.to | 2025-08-09This data validation tool is built on a simple principle: "Cross-cloud ready, code-first, operational in 30 seconds." And it is open source: ValidateLite on GitHub.
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SmartExcelGuardian
SmartExcelGuardian is a professional Python desktop application for Excel data cleanup, validation, and auditing. It automatically detects missing values, duplicates, type issues, and invalid formulas, applies heuristic scoring, conditional formatting, and auto-calculated Excel formulas, and export
Project mention: SmartExcelGuardian: Open-source Excel data cleaning with heuristics and formulas | news.ycombinator.com | 2026-01-19
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Python Data Validation discussion
Python Data Validation related posts
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Framework de Tests Automatisés API avec Pytest: Tutoriel Pratique
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Do you think we need an open-source web scraping monitoring tool?
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[D] Is accurately estimating image quality even possible?
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Python: Data validation
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A note from our sponsor - SaaSHub
www.saashub.com | 23 Jun 2026
Index
What are some of the best open-source Data Validation projects in Python? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | cleanlab | 11,515 |
| 2 | jsonschema | 4,952 |
| 3 | pandera | 4,381 |
| 4 | deepchecks | 4,025 |
| 5 | Cerberus | 3,285 |
| 6 | schema | 2,945 |
| 7 | Schematics | 2,589 |
| 8 | soda-core | 2,374 |
| 9 | voluptuous | 1,845 |
| 10 | cleanvision | 1,188 |
| 11 | dingo | 718 |
| 12 | colander | 463 |
| 13 | pointblank | 445 |
| 14 | opendataeditor | 306 |
| 15 | valideer | 261 |
| 16 | Validoopsie | 88 |
| 17 | python-codicefiscale | 87 |
| 18 | snowflake-provisioning | 50 |
| 19 | laravel-validation | 15 |
| 20 | OpenDQV | 10 |
| 21 | data_check | 5 |
| 22 | validatelite | 3 |
| 23 | SmartExcelGuardian | 3 |
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