App4mac has announced the release of Twin 1.0, a new online backup tool for Mac OS X. It costs €29 (US$40).
Twin helps you back up and archive files to a variety of Internet based servers - FTP, FTP and SFTP, WebDAV, Amazon S3 and MobileMe. It also lets you backup files to external drives.
The software preserves folder structures, resource forks, privileges and other Mac file-specific attributes, and supports AES-256 encryption and bz2 compression. You can set up exclusion rules, use a scheduler and split large files. The software also handles network error recovery, can apply individual digital signatures to backed up files, and is optimized for multi-core machines.
Twin 1.0 requires Mac OS X 10.5 or later.