title: PEX (disambiguation)
text: PEX is cross-linked polyethylene, a form of polyethylene with cross-links.
  
  PEX or Pex may also refer to:
  
  Science and technology
  Peer exchange, a method to gather peers for BitTorrent
  PHIGS Extension to X, in programming
  Pex (software), a unit testing framework for the .NET programming languages
  Pex (company), a digital rights technology company
  Physical examination, in medicine
  Plasma exchange, a form of plasmapheresis
  Pseudoexfoliation syndrome, condition related to glaucoma
  Parasitic extraction, tool in IC Layout Design, used for extract parasitic elements and see their effects on the circuit
  
  Other
  Palestine Exchange, a stock exchange
  People Express Airlines (1980s)
  PEX, operators of OPEX stock exchange
  Pex, a character in the Doctor Who story Paradise Towers
  
  See also
   PXE (disambiguation)