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a free Graphical User Interface for [[Chess Engine Communication Protocol]] and [[UCI]] compatible engines running under [[Windows]], and since November 2016 [[Linux]] <ref>[http://playwitharena.com/?Download:Arena_for_Linux Arena for Linux], November 12, 2016</ref>, developed by [[Martin Blume]] <ref>[http://www.playwitharena.com/?Newsticker:Archive_10 Arena Chess GUI 3.0 - Archive 10 | 154 Martin Blume Interview] by [[Michael Diosi]], December 21, 2007 (German)</ref>. The development started in 2001/2002 motivated and initiated by [[WinBoard]] aficionado [[Frank Quisinsky]]. The Arena team, soon maintaining their own website and support forum, was advanced by [[Christopher Conkie]], [[Michael Diosi]] and a lot of other people for Language translation and [[Opening Book]] support, for instance [[Harry Schnapp]], [[Đorđe Vidanović]], [[Carlos Pesce]] and [[Dann Corbit]] to name a few mentioned on the Arena site <ref>[http://www.playwitharena.com/?People_Involved Arena Chess GUI 3.0 - People Involved]</ref> . They initially set up an ''Arena Security Area'' for registered download of the GUI and the bundled Arena partner engines. In 2004 there was an attempt by [[Frank Quisinsky]] within the Gladiator-Shop to commercialize Arena bundled with engines such as [[Ruffian]] <ref>[https://www.stmintz.com/ccc/index.php?id=348116 Ruffian 2.1.0 ...] by [[Frank Quisinsky]], [[CCC]], February 09, 2004</ref>, [[Patriot]] <ref>[https://www.stmintz.com/ccc/index.php?id=356900 After Ruffian now the second project clear for take off (Patriot) ...] by [[Frank Quisinsky]], [[CCC]], March 27, 2004</ref> and [[Ktulu]] <ref>[https://www.stmintz.com/ccc/index.php?id=362816 Ktulu 5.0 by Rahman Paidar (Iran) available in Gladiator-Shop tomorrow!] by [[Frank Quisinsky]], [[CCC]], May 01, 2004</ref> . The Gladiator project was abandoned after suspicions that the new Patriot 2.0 was based on [[Fruit]] <ref>[https://www.stmintz.com/ccc/index.php?id=425107 Re: Sorry Vladimir but this is what I see...] by [[Christopher Conkie]], [[CCC]], May 09, 2005</ref> became substantial in May 2005 <ref>[https://www.stmintz.com/ccc/index.php?id=424288 Patriot 2.0 Revealed as a Clone!] by Nog, [[CCC]], May 04, 2005</ref>. Arena 3.5.1 is the recent version which was available from the ''Arena download site'', until its expiration in February 2019 <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=70014&start=26 Re: Arena website down >= 48 hrs] by gerhard, [[CCC]], February 28, 2019</ref>.