1)   WebDrive 10.0
WebDrive integrates FTP, FTPS, WebDAV, SFTP, Amazon S3 or FrontPage servers into the Windows desktop by mapping a network drive letter to a server. This allows you to use your favorite applications to edit files and save them directly to the server.
FTP, map network drive, SFTP, FrontPage, DAV, WebDrive, HTTP, WebDAV, collaborate, share,

 2)   SynchronEX File Synchronizer, Backup/FTP 3.0.6.3
Robust multi-directional file tree synchronization and backup over local & network paths in any situation: From laptop synchronization to ZIP'ed backup to incremental FTP/DAV website upload. True synchronization of (re)moved files. Scheduled tasks.
synchronizer, file, backup, sftp, ftps, dav, ftp, webdav, upload, directory,

 3)   SynchronEX File Sync/FTP/DAV for Linux 3.0.6.3
Robust multi-directional file tree synchronization and backup over local & network paths in any situation: From laptop synchronization to ZIP'ed backup to incremental FTP/DAV website upload. True synchronization of (re)moved files. Scheduled tasks.
synchronizer, file, linux, backup, sftp, ftp, ftps, dav, webdav, upload,

 4)   IT Hit WebDAV Server Engine .Net 1.0.3.0
Provides a high-level .Net API for WebDAV-enabling your application. With IT Hit library you can manage files stored in database, file system or any other storage over HTTP according to open standards. Shipped with several WebDAV server C# samples.
WebDAV Server Library, DAV, Distributed Authoring and Versioning, API, .Net Framework, ASP.NET, C#, Document Management,