Andrea Rossato originally designed and implemented xmobar up to version 0.11.1. Since then, it is maintained and developed by jao, with the help of the greater xmobar and Haskell communities.

In particular, xmobar incorporates patches by Kostas Agnantis, Mohammed Alshiekh, Ashesh Ambasta, Alex Ameen, Axel Angel, Enrico Maria De Angelis, Dhananjay Balan, Claudio Bley, Dragos Boca, Ben Boeckel, Ivan Brennan, Duncan Burke, Roman Cheplyaka, Patrick Chilton, Antoine Eiche, Nathaniel Wesley Filardo, Guy Gastineau, John Goerzen, Jonathan Grochowski, Patrick Günther, Reto Hablützel, Corey Halpin, Juraj Hercek, Jaroslaw Jantura, Tomáš Janoušek, Ada Joule, Spencer Janssen, Léana 江, Roman Joost, Pavel Kalugin, Jochen Keil, Sam Kirby, Lennart Kolmodin, Krzysztof Kosciuszkiewicz, Dmitry Kurochkin, Todd Lunter, Vanessa McHale, Robert J. Macomber, Dmitry Malikov, David McLean, Ulrik de Muelenaere, Joan Milev, Marcin Mikołajczyk, Dino Morelli, Tony Morris, Eric Mrak, Thiago Negri, Edward O'Callaghan, Svein Ove, Martin Perner, Alexander Pankoff, Jens Petersen, Alexander Polakov, Sibi Prabakaran, Pavan Rikhi, Petr Rockai, Andrew Emmanuel Rosa, Sackville-West, Amir Saeid, Markus Scherer, Daniel Schüssler, Olivier Schneider, Alexander Shabalin, Valentin Shirokov, Peter Simons, Alexander Solovyov, Will Song, John Soo, John Soros, Felix Springer, Travis Staton, Artem Tarasov, Samuli Thomasson, Edward Tjörnhammar, Sergei Trofimovich, Thomas Tuegel, John Tyree, Jan Vornberger, Anton Vorontsov, Daniel Wagner, Zev Weiss, Phil Xiaojun Hu, Nikolay Yakimov, Edward Z. Yang, Leo Zhang, Norbert Zeh, and Michał Zielonka.

Andrea wants to thank Robert Manea and Spencer Janssen for their help in understanding how X works. They gave him suggestions on how to solve many problems with xmobar. He also thanks Claus Reinke for making him understand existential types (or at least for letting him think he grasps existential types…;-).