Providers

This page lists where the common WebDAV servers and sync clients keep the folders that a store can sync through, and what each browser can do with a folder. These are facts about other products that change, so like-minded contains none of them, and each section says when they were checked. To make sure that a URL or a path still works, use store/check!.

WebDAV servers, as of September 2026

Server	The URL of the collection	The credentials
Nextcloud	https://HOST/remote.php/dav/files/USER/FOLDER/	An app password, from Settings, Security, Devices & sessions
ownCloud	https://HOST/remote.php/dav/files/USER/FOLDER/	An app password, from Settings, Security
Seafile	https://HOST/seafdav/LIBRARY/FOLDER/	The WebDAV password, set in Settings
Synology DiskStation	https://HOST:5006/SHARED-FOLDER/FOLDER/	The password of the account. The WebDAV Server package must be on.
Fastmail	https://myfiles.fastmail.com/FOLDER/	An app password for Files (WebDAV). The user name is the email address.
Hetzner Storage Box	https://BOX.your-storagebox.de/FOLDER/	The password of the box. WebDAV must be on, in the Robot.
Box	https://dav.box.com/dav/FOLDER/	The password of the account, or an app password if two-step verification is on

If a user name is an email address, percent-encode it in the path, e.g. simon%40example.org.

Sync clients, as of September 2026

Sync client	macOS	Windows	Linux
iCloud Drive	~/Library/Mobile Documents/com~apple~CloudDocs/	%USERPROFILE%\iCloudDrive\
Dropbox	~/Dropbox/	%USERPROFILE%\Dropbox\	~/Dropbox/
Google Drive	~/Library/CloudStorage/GoogleDrive-EMAIL/My Drive/	A drive letter, G:\My Drive\ by default
OneDrive	~/Library/CloudStorage/OneDrive-Personal/	%USERPROFILE%\OneDrive\
Seafile	~/Seafile/	%USERPROFILE%\Seafile\	~/Seafile/
Nextcloud	~/Nextcloud/	%USERPROFILE%\Nextcloud\	~/Nextcloud/
Syncthing	The folder that you set up

With "Optimize Mac Storage" on, iCloud Drive removes files that haven't been used for a while and leaves a hidden .name.icloud placeholder. The folder store ignores hidden files, so it can't read such a document until iCloud Drive downloads it again.

Folders in a browser, as of October 2026

Which browser can do what changes over time, so check for the feature itself, e.g. (exists? js/showDirectoryPicker), rather than for a browser. The versions are from MDN's compatibility data of 1 October 2026, and the times were measured on 3 October 2026 in Chrome 152, Firefox 156 and Safari 26.3.

	Chrome, Edge	Firefox	Safari
Pick a folder, showDirectoryPicker	86, and 132 on Android	No	No
Ask for a folder again, requestPermission	86. From 122, the user can allow a site on every visit.	No	No
Write a file, createWritable	86	111, in the origin private file system	26, in the origin private file system
Load a folder, <input webkitdirectory>	Yes	Yes	Yes, and on iOS from 18.4
Modification times in the origin private file system	Milliseconds	Milliseconds	Whole seconds

Mozilla and WebKit have both stated positions against picking folders. So for a while, in Firefox and Safari, the user syncs through a folder by hand: they save the document that document/for-device gives into the folder, and load the folder with <input webkitdirectory> to read the documents of the other devices.

Since Safari keeps whole seconds, two writes of the same size within a second there get the same version. Each device writes only its own document, and rarely twice in a second, so the default strategy of a document per device is hardly affected. The shared strategy is, since its writes depend on the version.