Open source block-storage projects
Every project in the registry tagged block-storage, ranked by real GitHub adoption.
Scalable open-source distributed storage system
A popular & widely deployed Open Source Container Native Storage platform for Stateful Persistent Applications on Kubernetes.
ZeroFS: A log-structured filesystem for S3. ZeroFS serves S3-compatible buckets as POSIX filesystems over NFS and 9P, or as raw block devices over NBD.
Frequently asked questions
How many open source block-storage projects are there?
This registry tracks 3 projects tagged block-storage, with 29,955 GitHub stars between them. The most-adopted is Ceph at 17,062 stars.
Are these block-storage projects free to use?
Yes — 2 of the 3 carry an explicit open-source licence across 2 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 block-storage 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 block-storage projects still maintained?
3 of the 3 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.