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Pier is a Windows 10/11 app that mounts remote storage as a local drive letter: WebDAV (Nextcloud, ownCloud, Synology, QNAP), SFTP over SSH and NFSv3. Explorer, Office and backup tools see an ordinary disk. A block cache on the local disk keeps large files fast, interrupted transfers resume, a dropped connection is re-dialled on its own and a drive keeps working offline. Interface in 16 languages, including Thai, Vietnamese and Indonesian. Free for up to 5 drives; Pro is 19 USD a year.