Open Source Alternatives
Open Source Cloud Storage Alternatives to Cloudflare R2
S3-compatible object storage with no egress fees.
Cloudflare R2 is a trademark of its respective owner.
Updated Aug 2026
What you gain
- ✓Run S3-compatible object storage on hardware you control, with no per-gigabyte storage bill
- ✓Cost is capacity you own, not metered API calls and storage classes
- ✓Keep data on-premises or in your own cloud account for compliance
- ✓No vendor lock-in on your storage API or bucket layout
What you give up
- △You lose R2's zero-egress-fee economics that undercut S3 on bandwidth
- △No Cloudflare CDN sitting in front of your buckets by default
- △You run replication, backups, and disk-failure recovery yourself
- △No managed durability guarantee: data safety becomes your operational problem
Switching Cost
R2 speaks the S3 API, and so do SeaweedFS, RustFS, and Garage, so the code change is usually a one-line endpoint swap. The migration cost is operational, not code: you provision storage, set up replication, and own durability. Solo developers and small teams can stand up SeaweedFS or Garage in an afternoon. The hidden cost is that R2's headline feature is zero egress fees, and self-hosting trades that bandwidth math for hardware and ops you now maintain. If you serve heavy public downloads, price out your own bandwidth before you switch.
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Drop-in Replacements
Ranked by feature coverage
SeaweedFS
8880% coverageDistributed storage for S3 and file systems
SeaweedFS stores billions of files without the S3 bill. It speaks the S3 API, so most tools pointed at AWS move over with a config change, and it also mounts as a POSIX filesystem over FUSE or WebDAV when you want it to look like a disk.
RustFS
8870% coverageRustFS is a MinIO alternative written in Rust. It speaks the S3 API, so any tool that works with AWS S3 works with RustFS.
Garage
6655% coverage(Mirror) S3-compatible object store for small self-hosted geo-distributed deployments. Main repo: https://git.deuxfleurs.fr/Deuxfleurs/garage
Garage is S3-compatible object storage built for small clusters of cheap, mismatched machines instead of enterprise hardware. Point your existing S3 tooling at it, replicate across three nodes in different locations, and it keeps serving through failures.
Amazon S3