Folder

Folder vs Mountain Duck

Both put Cloudflare R2 buckets in Finder. They differ in how you sign in, what is kept, and what else they connect. This compares Folder in your Cloudflare; a folder on Folder needs no R2 at all.

Pick FolderYour files are in Cloudflare R2, and you want them in Finder and on the web, with every version kept and share links.
Pick Mountain DuckYou need more than R2 in Finder: servers and many kinds of cloud storage, or Windows.
Mountain DuckFolder, in your Cloudflare
Connects toServers and many kinds of cloud storage, R2 among themYour Cloudflare R2 buckets
Signs in withAn R2 access key and the R2 profileYour Cloudflare sign-in; you pick the buckets
In FinderA disk, or synced through File Provider in integrated modeA folder under Locations, through File Provider
A deleted file comes backR2 keeps no history of its ownEvery overwrite and delete kept
PriceA license for one major version, any number of your computersCloudflare's bill, usually $0
Runs onMac and WindowsMac and the web; the iPhone app is not in the App Store yet
Mountain Duck's own words from mountainduck.io and its buy page, October 2026.

Mountain Duck

Mountain Duck, from the makers of Cyberduck, “lets you mount server and cloud storage as a disk in Finder on macOS”, and in Explorer on Windows. Its integrated mode syncs through macOS’s File Provider. A license is “valid for one specific major version”, for any number of computers used by the same person.

Moving From Mountain Duck

The buckets stay where they are. Get Folder for Mac, choose In Your Cloudflare, sign in to Cloudflare and tick the buckets you had in Mountain Duck. Each appears in Finder under Locations, with its history from then on. The R2 access key Mountain Duck used is not needed.