In alphabetical order:

* John Pedersen, from John Wiley & Sons, Inc.
  for his detailed and constant feedback about high-quality rendering,
  combining characters and usage of TeX fonts. He's also been the first
  one compiling the tool under Solaris.

* Claudio Sacerdoti Coen,
  for his bug-reports and useful feedback for the GTK+ interface and
  the implementation of the <maction> element (toggle mode). He's also
  contributed into the development of various bindings for the Ocaml
  language.

* Endre Somogyi
  for the porting of the widget to Windows (not yet completed).

