via pdroms:

MobileFinder (strictly "Finder" in the iPhone's springboard view) is a filesystem navigator and launcher for use with iPhones which have been jailbroken.

Features:
  • Filesystem navigation with system file protection
  • Icons differentiate different filetypes
  • Copy, Move, Delete operations (requires that /bin/mv and /bin/cp be installed)
  • File creation and renaming
  • Application Launch - Also launches MobileStudio apps
  • Executable launch (scripts, etc)
  • Preferences screen with filesystem browse settings
  • User modifiable associated file types that launch file viewers
  • Open mode when launched by other apps in MobileStudio


Homepage: http://code.google.com/p/mobilefinder/