Top pick · highest health
Zenko CloudServer
Implementation of the Amazon S3 protocol on the front-end and backend storage capabilities to multiple clouds, including Azure and Google.
DockerNodejs
File Transfer & Synchronization
Open source alternatives to AWS S3
We track 3 open-source AWS S3 alternatives, of which 3 currently score 70 or above on Repoly's GitHub health scale and 2 ship a Docker image. Zenko CloudServer leads on health at 93/100 with 315 commits in the last 90 days; across all 3 projects you are choosing between AGPL-3.0, Apache-2.0.
updated Oct 2026 3 alternatives best health 93 ★ 38k combined 1,718 commits / 90d 2 with Docker
Top picks to replace AWS S3
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Healthiest
Health 93/100: 315 commits in 90 days, latest release 9.5.2, Docker image available.
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Most starred
35,821 stars, the biggest community among AWS S3 alternatives.
Showing 3 of 3 tools
All 3 AWS S3 alternatives, ranked by health
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GarageHQ
Geo-distributed, S3‑compatible storage service that can fulfill many needs.
DockerRust -
SeaweedFS
SeaweedFS is an open source distributed file system supporting WebDAV, S3 API, FUSE mount, HDFS, etc, optimized for lots of small files, and easy to add capacity.
Go
AWS S3 alternatives compared
Zenko CloudServer edges GarageHQ 93 to 89, and most of the difference is stars: 2k stars against 179 stars. SeaweedFS has the largest following at 36k stars, yet ranks #3 of 3, held back mostly by Docker support (no Docker image).
The most recent release is Zenko CloudServer 9.5.2, published 3 days ago. None of the measured options scores under 40. By stack, Go (1), Nodejs (1) and Rust (1) are the most common. Zenko CloudServer and SeaweedFS are permissively licensed; GarageHQ is copyleft.
| Tool | Health | Stars | Licence | Last commit | Docker |
|---|---|---|---|---|---|
| Zenko CloudServer Steady at 93 since 11 Sep | 93 | 2k | Apache-2.0 | yesterday | Yes |
| GarageHQ Steady at 89 since 27 Sep | 89 | 179 | AGPL-3.0 | 7 days ago | Yes |
| SeaweedFS Steady at 88 since 11 Sep | 88 | 36k | Apache-2.0 | today | No |
AWS S3 alternatives: common questions
What is the most maintained open source alternative to AWS S3?
Zenko CloudServer scores highest at 93/100, with 315 commits in the last 90 days, 2k stars on GitHub and its latest release (9.5.2) published 3 days ago. SeaweedFS has the most raw commit activity at 1269 commits in 90 days.
Which AWS S3 alternatives use a permissive licence?
2 of 3 are permissively licensed (MIT, Apache, BSD or similar): Zenko CloudServer (Apache-2.0), SeaweedFS (Apache-2.0). 1 use copyleft licences such as GPL or AGPL, which require you to publish changes if you distribute a modified version.
Which AWS S3 alternatives run in Docker?
2 of 3 publish a Docker image or Compose file: Zenko CloudServer, GarageHQ. Docker support contributes 10 of the 100 available health points, because it is the clearest signal that self-hosting is a supported path rather than an afterthought.
Is Zenko CloudServer or GarageHQ the better AWS S3 alternative?
On measured health Zenko CloudServer leads, 93 to 89. Zenko CloudServer has 315 commits in 90 days, 2k stars and 9.5.2 from 3 days ago; GarageHQ has 134 commits in 90 days, 179 stars and v2.5.0 from 6 days ago. Zenko CloudServer is ahead or level on every term Repoly measures.
Are the AWS S3 alternatives still maintained?
3 of the 3 measured options score 70 or above. Every measured option had commits in the last 90 days. None scores under 40.
What languages are the AWS S3 alternatives written in?
Go: SeaweedFS. Nodejs: Zenko CloudServer. Rust: GarageHQ. The stack matters if you plan to extend or patch the tool yourself.
