Wikipedia
Konqueror is a free and open-source web browser and file manager that provides file viewer functionality for file systems such as local files, files on a remote FTP server and files in a disk image. It is a core part of the KDE Software Compilation. Konqueror is developed by volunteers and can run on most Unix-like operating systems and on Windows systems. Konqueror is licensed and distributed under the GNU General Public License version 2.
The name "Konqueror" is a reference to the two primary competitors at the time of the browser's first release: "first comes the Navigator, then Explorer, and then the Konqueror". It also follows the KDE naming convention: the names of most KDE programs begin with the letter K.
Konqueror was released with version 2 of KDE on October 23, 2000. It replaces its predecessor, KFM (KDE file manager). With the release of KDE 4, Konqueror was replaced as the default file manager by Dolphin, but is still maintained as the default KDE web browser.