Best Open Source Alternatives to AWS S3

Compare the best free and open-source alternatives to AWS S3 — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated November 2026 · 5 alternatives

AWS S3

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AWS S3 alternatives compared

Open-source alternatives to AWS S3, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
SeaweedFS	35,872	Apache-2.0	LinuxmacOSWindowsDocker	Yes	Nov 2026	Visit
Ceph	17,193	LGPL-2.1	LinuxDocker	Yes	Nov 2026	Visit
OpenStack Swift	2,805	Apache-2.0	Linux	Yes	Oct 2026	Visit
Zenko	672	Apache-2.0	LinuxDocker	Yes	Nov 2026	Visit
Garage	0	AGPL-3.0	LinuxDocker	Yes	—	Visit

Top open-source AWS S3 alternatives

SeaweedFS35,872Apache-2.0

SeaweedFS is an open-source alternative to AWS S3 that handles billions of files with O(1) disk seeks, WebDAV drive mounts, and full S3 API support.

LinuxmacOSWindowsDocker

vs AWS S3: a free, open-source option you fully control, licensed Apache-2.0.

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Ceph17,193LGPL-2.1

Ceph provides self-hosted, S3-compatible object storage on private hardware, eliminating cloud vendor lock-in, per-request fees, and egress charges.

LinuxDocker

vs AWS S3: a free, open-source option you fully control, licensed LGPL-2.1.

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OpenStack Swift2,805Apache-2.0

OpenStack Swift is an open-source object storage system that replaces AWS S3 with self-hosted, unmetered clusters running on commodity Linux hardware.

Linux

vs AWS S3: a free, open-source option you fully control, licensed Apache-2.0.

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