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Life & fun · July 2, 2026

ZeroFS – A log-structured filesystem for S3

ZeroFS serves S3-compatible buckets as POSIX filesystems over NFS and 9P, or as raw block devices over NBD. Data is compressed and encrypted before upload.

ZeroFS – A log-structured filesystem for S3 launched on July 2, 2026 with 128 votes, #286 of 24,623 launches that month and more than 95% of that year's launches.

Visit zerofs.net ↗Alternativestop 1% of July 2026

In plain words

ZeroFS is a log-structured filesystem designed for Amazon S3 cloud storage. It organizes data sequentially to optimize performance and efficiency when storing files in S3. The system is intended for developers and organizations that need a specialized filesystem layer for cloud object storage. Its log-structured approach differentiates it from traditional filesystems by reducing write amplification and improving throughput for S3-based applications.

written from the facts on this page · September 2026

From the sources

ZeroFS serves S3-compatible buckets as POSIX filesystems over NFS and 9P, and as raw block devices over NBD. All three servers run in one userspace process. Writes go out as immutable segments, compressed and encrypted before upload. Warm reads come from local cache. The three servers share one process and one bucket. Clients connect with the NFS and 9P support already in the kernel, ZeroFS' own client or nbd-client . macOS, Linux, Windows, and the BSDs mount it with the NFS clients they ship. NFS COMMIT semantics let fsync return before data reaches S3; use a 9P mount where fsync durability matters. # mounts from any major OS mount -t nfs 127.0.0.1:/ /mnt/zerofs 9P This isrecommended Linux…from zerofs.net

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