Blob0

Blob0 is positioned as a desktop file manager for S3-compatible object storage on macOS. Instead of opening a provider’s web console, you connect a bucket and work with it through a familiar folder-style interface, which makes routine browsing and organizing feel closer to local disk operations.

The core feature set covers browsing buckets, uploading and downloading objects, creating folders, and previewing files. It supports multiple S3-compatible providers, including Cloudflare R2, Amazon S3, MinIO, Backblaze B2, Wasabi, and Alibaba Cloud OSS. Sharing is handled through presigned URLs, and credentials are kept in the macOS Keychain rather than in plain text. A CLI and agent skill for tools like Claude Code, Codex, and Cursor extend the same workflow beyond the GUI.

It suits developers, indie makers, and small teams who already use S3-style storage and want a lighter way to manage files without switching to a browser console. Users who need cross-platform support or deep provider-specific administration features should check compatibility before committing.

A practical approach is to start with one bucket, confirm that credentials and permissions behave as expected, and then try transfers and presigned sharing on non-critical files. The guides for each provider are a reasonable starting point for connection setup.

Overall, Blob0 is a focused macOS utility for people who want object storage to behave more like a local folder.