The Collaborative International Dictionary of English v.0.48:

Exploder \Ex*plod"er\, n.
   1. One who or that which explodes.
      [1913 Webster]

   2. One who rejects an opinion or scheme with open contempt.
      --South.
      [1913 Webster]

The Jargon File (version 4.4.7, 29 Dec 2003):

Exploder
 n.

    Used within Microsoft to refer to the Windows Explorer, the web-interface
    component of Windows 95 and WinNT 4. Our spies report that most of the
    heavy guns at MS came from a Unix background and use command line
    utilities; even they are scornful of the over-gingerbreaded WIMP
    environments that they have been called upon to create.