KDE Disk archiver is a disk-based archiving and backup utility. It can perform differential backups, which means that it can quickly store the differences between a recent full backup and the current state of your data. An archive browser easily allows you to view the "table of contents" of your archive. A sophisticated file filtering mechanism allows you to select which files and directories to backup or restore, and which files to compress. The table of contents can be extracted from the archive and used as a reference when making differential backups, which means you don't need your archive CDs handy to do a differential backup of the entire filesystem.
wget can be used to download a Web site, with all pages referenced by the originating one, but it saves all pages in a directory tree (or single directory). The intention of web-archive-creator is to join the power of wget and the usability of the .war format, which Konqueror is able to browse. The Web ARrchive format is simply a tarred and gzipped file containing the Web files. The web-archive-creator script performs the download with wget and writes an index.html linking to the starting pages/URLs wget fetched.