mapfs is a small, clean, POSIX semantics userspace file system for linux. mapfs is designed to speed up cloud object storage access from locally with optimized cache mechanism.

Mapfs supports Azure Blob Storage and AWS S3-like Object Storage, e.g. Wasabi, Google Cloud Storage, Oracle Cloud Storage, Aliyun, CloudFlare R2, etc.

mapfs is extremely fast!

• zero overhead, only limited by hardware and linux kernel architecture
• IOPS: 1.1M
• Throughput: 80.4 GiB/s

Latest Release

Version 2.0 (2026-05-28)