
13 ABOUT XCSOAR
We try to coordinate our activities to avoid conflict and duplicated effort, and to work together as a
team. If you would like to get involved in the software development, send the developers an email.
13.5 User base
Who is using XCSoar? Good question, and hard to answer. Since no-one pays for the product –
most people download the program anonymously – it is hard for anyone to keep track of how many
users are out there.
Statistics from the main website indicate there has been an average of approximately twenty down-
loads per day between June 2005 and June 2006, and eighty downloads per day between June
2006 and September 2007. Looking at how many people download the terrain and topology data
packs from the website indicates that it is used in many countries and in nearly every continent.
XCSoar is used by a wide cross section of pilots, including early post-solo through to experienced
competition pilots. There are many ‘armchair’ pilots who use XCSoar with gliding simulators, such
as Condor.
13.6 Credits
Software developers:
• Mike Roberts
Other code and algorithms contributions come from:
• Ephemeris Jarmo Lammi
• Shapelib Frank Warmerdam
• Least squares Curtis Olson http://www.flightgear.org/
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curt
• Aviation Formulary Ed Williams
• JasPer
• KFlog Volkslogger code by Heiner Lamprecht
• Volkslogger support Garrecht Ingenieurgesellschaft
123 XCSoar Manual (Altair version) • XCSoar-A-EN
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