SEES is a concurrent file collaboration and version system provides file sharing, editing by multiple users in a network. SEES provides safe file collaboration, automated version management and backup. SEES can be applied in any network easily, started directly. Safe backup and automated version management: When a user checks-in a file, server creates a backup and records a comment for changes. All versions of a file can be checked easily at the server. Checked-in files are also stored at the client's backup folder automatically, user can see the file later, check-in again easily when the previously checked-in files have problem. Server administrator can control the number of backup files, server removes the oldest backup files automatically to maintain the specified number of backups and enough disk spaces. Server administrator can restore the file's version to the old one, by request of users or some reasons. Instant messaging between working users: When a user want to use a file, it is possible that the file is checked-out (occupied) by other user. At that time, user can send a message to the occupier asking check-in schedule, etc.. All user can send a message to his group users to notify important changes made by the user. Administrator can setup a notification message and users can see this at login time. Interactive user interfaces: SEES uses special console window that displays information and accept a command execution by double-clicking the command line. This enables an administrator, and a user can work intuitively.