qRFCView is a viewer for IETF RFCs. Advantages are:
* automatic table of content, with direct opening of section;
* handling of RFC internal cross-references;
* automatic downloading of a referenced RFC from the IETF web site on
  a simple click;
* caching of RFC in a local directory;
* tab-browsing of RFC;
* searching. 

WWW: http://qrfcview.berlios.de/
Author: Romain Rollet <rfcview@gmail.com>