Konqueror
Konqueror is a 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.
Read more about Konqueror.