Mount your cloud storage.
Work in Finder.
Cask turns S3-compatible buckets (R2, S3, Spaces, Wasabi, MinIO) into Finder drives. Credentials stay in macOS Keychain.
Features
A Finder drive for your buckets
Built for people who keep projects in the cloud, but want to work as if everything is local.
Credentials live in macOS Keychain. Mount settings stay on your machine.
Browse and edit files with the apps you already use. No new UI to learn.
R2, S3, Spaces, Wasabi, MinIO, and most S3-compatible endpoints.
Mounts live under ~/Cask/<MountName> so they behave like your files, not a system volume.
How it works
Three steps, then it feels local
Download
Install Cask and start it from the menu bar.
Connect
Choose your provider, paste credentials, pick a bucket.
Mount
Your bucket appears in Finder under ~/Cask/<MountName>.
Quickstart
Set it up in minutes
Download the app, connect a bucket, and work in Finder.
https://cask.arya.sh/download# 1) Open Cask from the menu bar
# 2) Set Up Connection
# 3) Choose provider + paste credentials
# 4) Pick bucket + name your mount
#
# Result: a Finder drive at ~/Cask/<MountName>
open ~/CaskS3 compatible
Works across the S3 ecosystem
Most setups are just an endpoint, a bucket name, and credentials.
Security & privacy
Local-first by default
Cask is designed for power users who want clear boundaries: what's stored, what's transmitted, and what stays on-device.