SeaweedFS is an open source distributed file system supporting WebDAV, S3 API, FUSE mount, HDFS, etc, optimized for lots of small files, and easy to add capacity.

Cloud native image registry that stores, signs, and scans content.

Flexible, fully featured and highly configurable SFTP server with optional FTP/S and WebDAV support.

A production-ready vendor-neutral OCI-native container image registry.

Zenko CloudServer, an open-source implementation of a server handling the Amazon S3 protocol.

A nonbloated, modern, and highly configurable file/screenshot vault server with support for ShareX, Flameshot, and Spectacle. Offers OCR search and more.

Geo-distributed, S3‑compatible storage service that can fulfill many needs.