Open source metadata projects
Every project in the registry tagged metadata, ranked by real GitHub adoption.
An orchestration platform for the development, production, and observation of data assets.
A User-Focused Photo & File Management System
Remove visible and invisible AI watermarks and provenance metadata from images and video. Python library and CLI for SynthID, C2PA, EXIF, IPTC, XMP, and common
A self-hosted library for your ebooks, comics, and audiobooks
A free to use dbt package for creating and loading Data Vault 2.0 compliant Data Warehouses (powered by dbt, an open source data engineering tool, registered t
Frequently asked questions
How many open source metadata projects are there?
This registry tracks 5 projects tagged metadata, with 35,131 GitHub stars between them. The most-adopted is dagster at 16,364 stars.
Are these metadata projects free to use?
Yes — 5 of the 5 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which metadata project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these metadata projects still maintained?
4 of the 5 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.