Best Open-Source Alternatives to Amazon S3 (2026) | open-source.store

Best Open Source Alternatives to Amazon S3

Compare the best free and open-source alternatives to Amazon 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 · 2 alternatives

Amazon S3

Proprietary SaaS

Amazon S3 alternatives compared

Open-source alternatives to Amazon S3, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
SlateDB	3,609	Apache-2.0	Web	No	Nov 2026	Visit
Storj	3,284	AGPL-3.0	Web	No	Nov 2026	Visit

Top open-source Amazon S3 alternatives

SlateDB3,609Apache-2.0

SlateDB is an embedded key-value storage engine that replaces disk-bound engines by persisting LSM-tree tables directly to cloud object storage.

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

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OpenIDE — мультиязычная среда разработки для профессионалов

Best Open Source Alternatives to Amazon S3

Amazon S3

Amazon S3 alternatives compared

Top open-source Amazon S3 alternatives

The modern standard for Protobuf workflows

Mentoring for backend developers. Consulting for startups.