FreeBackup main features: full and incremental backup - file-version history (stores revisions of backup files) - backup on removable media - sub-directories are included automatically - easy restoring of files and directories - source code available. This is how FreeBackup works: Each time a backup is made (full or incremental) the file structure of ALL backup files is preserved in a database (files_yymmddhhmm.mdb). This databases is used for restoring purposes. Next the files are copied to the backup medium. They are renamed in order to allow multiple revisions (e.g. testfile.doc to testfile.doc_yymmddhhmm). The directory structure is not changed and so is reflected unchanged on the backup medium. The name, size, date and backup medium numbers of all backed up files are stored in a separate database (backup_yymmddhhmm.mdb) for redundancy reasons. Finally the 2 databases are copied to the backup medium.