head to head · open source
mountpoint-s3 vs ZeroFS
mountpoint-s3 has 5,771 GitHub stars, 252 forks, 121 open issues and last shipped yesterday. ZeroFS has 3,078 stars, 119 forks, 10 open issues and last shipped today. mountpoint-s3 leads on adoption by 87% (5,771 vs 3,078 stars). mountpoint-s3 is written in Rust under Apache-2.0; ZeroFS is written in Rust under AGPL-3.0. mountpoint-s3 has attracted 4% as many forks as stars, ZeroFS 4%. ZeroFS was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (filesystem, fuse), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| mountpoint-s3 | ZeroFS | |
|---|---|---|
| GitHub stars | ★ 5.8K | ★ 3.1K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Rust | Rust |
| Last push | 2026-09-21 | 2026-09-22 |
| Forks | ⑂ 252 | ⑂ 119 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick mountpoint-s3 if
- You weight community size — 5.8K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick ZeroFS if
- You want the ZeroFS feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Rust
- You evaluated both and ZeroFS fits your workflow better
About mountpoint-s3
Mountpoint for Amazon S3 is a simple, high throughput file client that mounts an Amazon S3 bucket as a local file system, written in Rust and released by AWS Labs under the Apache 2.0 licence for developers and operators who need file level access to objects in S3.
read the full mountpoint-s3 overview →
About ZeroFS
ZeroFS is a log structured filesystem written in Rust that presents S3 compatible buckets as POSIX filesystems over NFS and 9P, and as raw block devices over NBD, for teams that want object storage to behave like ordinary local storage.
read the full ZeroFS overview →
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Frequently asked questions
Is mountpoint-s3 or ZeroFS more popular?
mountpoint-s3 has 5,771 GitHub stars and ZeroFS has 3,078. mountpoint-s3 has the larger community by that measure.
Are mountpoint-s3 and ZeroFS free?
Both are open source. mountpoint-s3 is licensed under Apache-2.0 and ZeroFS under AGPL-3.0. Neither carries a licence fee.
What is the difference between mountpoint-s3 and ZeroFS?
mountpoint-s3 is written in Rust and ZeroFS in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, mountpoint-s3 or ZeroFS?
Choose mountpoint-s3 if you want the larger community (5,771 stars) or its Apache-2.0 licence terms. Choose ZeroFS if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.