Ext2Read (Ext2Explore) is a free, open source application for exploring the contents of an Ext2, Ext3, or Ext4 filesystem. It provides a graphical user interface to navigate, view, and modify files and directories on an Ext2, Ext3, or Ext4 filesystem. Ext2Read can also be used to create, delete, and resize partitions, as well as modify the filesystem parameters. In addition to this, it can also be used to mount, unmount, and check the integrity of a filesystem. Additionally, it can be used to backup and restore files and directories, as well as to format a filesystem.
Still under development (on GitHub).