head to head · open source
mountpoint-s3 vs arc
mountpoint-s3 has 5,770 GitHub stars, 252 forks, 121 open issues and last shipped 2 days ago. arc has 676 stars, 53 forks, 57 open issues and last shipped today. mountpoint-s3 leads on adoption by 754% (5,770 vs 676 stars). mountpoint-s3 is written in Rust under Apache-2.0; arc is written in Go under AGPL-3.0. mountpoint-s3 has attracted 4% as many forks as stars, arc 8%. arc was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | arc | |
|---|---|---|
| GitHub stars | ★ 5.8K | ★ 676 |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Rust | Go |
| Last push | 2026-09-18 | 2026-09-20 |
| Forks | ⑂ 252 | ⑂ 53 |
| 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 arc if
- You want the arc feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Go
- You evaluated both and arc 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 arc
Arc is an open, SQL native time series database, released under AGPL 3.0, for engineers and platform teams who need to keep full resolution telemetry from machines, services, vehicles, and devices and still query recent and historical data together in one system.
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Frequently asked questions
Is mountpoint-s3 or arc more popular?
mountpoint-s3 has 5,770 GitHub stars and arc has 676. mountpoint-s3 has the larger community by that measure.
Are mountpoint-s3 and arc free?
Both are open source. mountpoint-s3 is licensed under Apache-2.0 and arc under AGPL-3.0. Neither carries a licence fee.
What is the difference between mountpoint-s3 and arc?
mountpoint-s3 is written in Rust and arc in Go. 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 arc?
Choose mountpoint-s3 if you want the larger community (5,770 stars) or its Apache-2.0 licence terms. Choose arc if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.