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Top 3 datadiscovery Open-Source Projects
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OpenMetadata
The Open Context Layer for Data and AI , OpenMetadata is the open platform for building trusted data context and business semantics for humans, AI assistants, and agents.
Project mention: Show HN: Marmot – Single-binary data catalog (no Kafka, no Elasticsearch) | news.ycombinator.com | 2025-12-02Great to see Marmot here and I'm a huge fan of your project. Recently, we deployed a catalog but we went with open-metadata https://open-metadata.org/ another amazing project.
What we missed on marmot was existing integrations with Airflow and other plugins like Tableau, PowerBI etc. We're an enterprise and needed a more mature product. Fingers crossed marmot reaches there soon.
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SaaSHub
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metacrafter
Metadata and data identification tool and Python library. Identifies PII, common identifiers, language specific identifiers. Fully customizable and flexible rules
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).
datadiscovery discussion
datadiscovery related posts
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Show HN: Marmot – Single-binary data catalog (no Kafka, no Elasticsearch)
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Ask HN: Best way to create a searchable knowledge base?
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Show HN: OpenMetadata – OSS platform for data discovery observability governance
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OpenMetadata: Join the #1 Open Source Data Community
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How to Dynamically Adjust the Height of a Textarea in ReactJS
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Blog - Project Nessie: A Look in the Depths
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What is your favorite data catalog?
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A note from our sponsor - SaaSHub
www.saashub.com | 9 Jun 2026
Index
What are some of the best open-source datadiscovery projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | OpenMetadata | 14,124 |
| 2 | awesome-data-catalogs | 1,036 |
| 3 | metacrafter | 46 |
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