The following persons and institutions helped in the development of APE at one stage or another. Many users gave important feed-back with their encouragements, comments, or bug reports: thanks to all of you! Significant bug fixes were provided by Cécile Ané, Jeremy Beaulieu, James Bullard, Otto Cordero, Éric Durand, Olivier François, Rich FitzJohn, Matt Johnson, Jos Käfer, Bret Larget, Ludovic Mallet, Mahendra Mariadassou, Naim Matasci, Nick Matzke, Michael Phelan, Elizabeth Purdom, Dan Rabosky, Filipe Vieira, Tim Wallstrom, Li-San Wang, Yan Wong, Peter Wragg, Janet Young, and Jinlong Zhang. Contact me if I forgot someone. Kurt Hornik and Brian Ripley, of the R Core Team, helped on several occasions to fix some problems and bugs. Financial support was provided in the early development of APE by the French "Programme inter-EPST Bioinformatique" (2001-2003). Financial support was provided by the Department of Information Systems of IRD in form a "SPIRALES" project (2006). Financial support was provided by Google to Andrei-Alin Popescu during the 2011 Google Summer of Code (GSoC 2011).