Open source alternatives to Amazon S3

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minioRELEASE.2025-10-15T17-29-55Zminio/minio

MinIO is a high-performance, S3 compatible object store, open sourced under GNU AGPLv3 license.

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seaweedfs4.53seaweedfs/seaweedfs

SeaweedFS is a distributed storage system for object storage (S3), file systems, Iceberg table buckets, and Lance vector buckets, designed to handle billions of files with O(1) disk access and effortless horizontal scaling.

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rustfs1.0.5rustfs/rustfs

RustFS is an open-source, S3-compatible high-performance object storage system supporting migration and coexistence with other S3-compatible platforms such as MinIO and Ceph.

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cephv22.0.0ceph/ceph

Ceph is a distributed object, block, and file storage platform