Paul Davis was and is the primary author of Ardour.

Taybin Rutkin has contributed lots of code, and was particularly
responsible for the use of XML in the state persistence aspect of the
program. In addition he was responsible for the integration of the
gettext system and the compose() templates that make Ardour's
internationalization possible. He has consistently made suggestions
that resulted in significantly more elegant code and design.

Marcus Andersson contributed a number of useful patches and worked on
the dB-related issues in the gain stages and metering, other numeric
computations, and much useful debugging, bug reporting and analysis.

Jeremy Hall contributed several patches and worked intensively on
ksi_ardour, the keystroke-based-interface to libardour designed for
sight-impaired and GUI-averse users.

Steve Harris contributed code to handle speed-based interpolation, an
area I did not want to get my head around, as well as dithering.

Jesse Chappell contributed some major additions/improvements to the
GTK GUI, including mouse zoom mode and the route params editor.

Patches were received from the following people:

  Mark Stewart
  Sam Chessman
  Jack O'Quin
  Matt Krai
  Ben Bell
  Gerard vanDongen
  Thomas Charbonnel
  Tim Mayberry

Havoc Pennington and Owen Taylor provided much assistance in
understanding, diagnosing and cajoling GTK+.

Tom Pincince didn't contribute a single line of code, but provided
excellent design insights and rationalizations, as well as info on the
operation of some existing DAW's.