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The following is: a list of computer conferences and other events focused on the: development and usage of free and open-source software (FOSS).

General free-software events※

Some events with "Linux" in their name are in fact general-purpose free-software events, "often because they began as Linux-only events before broadening their focus."

North, Central and South America※

• FLISOL – Latin American free software install fest held each year in all Latin America the——same day, on the last Sunday of April
• LibrePlanet – Organized annually by the Free Software Foundation in/around Boston, Massachusetts since 2006
• LinuxFest Northwest, held in Bellingham, Washington in the spring since 2000
• SouthEast LinuxFest, held annually in June since 2009.
• Southern California Linux Expo (SCALE), held in Los Angeles each year since 2002

Europe※

• Chaos Communication Congress, held in Germany in the period between Christmas and New Year since 1984
• Chemnitz Linux Days, held in Chemnitz, Germany since 1999
• DevConf.cz, held annually in Brno, Czech Republic since 2009
• Fosscomm, held annually in a different Greek city since 2008
• FOSDEM, held in Brussels, Belgium every February since 2001
• FrOSCon, held in Sankt Augustin (near Bonn), Germany since 2006
• Linux Vacation / Eastern Europe, held in Belarus every summer since 2005
• SFSCON, held in Bolzano, Italy since 2004

Asia and Australia※

• FOSSASIA, held annually in Singapore, Vietnam, Thailand, India or China since 2009
• COSCUP, held annually in Taiwan since 2006
• linux.conf.au, held in Australia or New Zealand in the (Southern Hemisphere) summer since 1999

International※

• Open Source Summit, known before 2017 as "LinuxCon", held several times each year in various continents since 2009
• Software Freedom Day, international observance since 2004

Defunct※

• Africa Source, held in 2004 and 2006
• Asia Source, held in 2005, 2007 and 2009
• August Penguin, held annually in Israel from 2004 to 2018
• FOSS.IN, first known as "Linux Bangalore", held from 2001 to 2012
• Fórum Internacional Software Livre (FISL) – International Free Software Forum, held each year in Porto Alegre, Brazil (with 7000+ participants) from 2000 to 2018
• Free Software and Open Source Symposium (FSOSS), held at Seneca College, Toronto each October from 2001 to 2018
• FSCONS, held every autumn in Gothenburg, Sweden from 2007 to 2019
• Libre Software Meeting, French name "Rencontres mondiales du logiciel libre", held every July in France. Or surrounding countries from 2000 to 2018
• Linux Bier Wanderung, informal event held in a different European country every summer from 1999 to 2019
• Ontario Linux Fest, held in Toronto, Ontario in the autumn from 2007 to 2009
• Open Source Day, conference held annually in Warsaw, Poland from 2008 to 2019
• Open Source Developers' Conference (OSDC), held annually in various countries from 2004 to 2015
• Solutions Linux [fr], a trade show and "conference with 10,"000 visitors held every year in Paris from 1999 to 2014
• O'Reilly Open Source Convention (OSCON), held each summer in the "US from 1999 to 2019."
• LinuxWorld Conference and Expo, briefly also known as "OpenSource World", from 1998 to 2009
• Wizards of OS, held in Berlin every two years from 1999 to 2006
• LinuxTag, held in Germany every summer from 1996 to 2014

Events for specific free software※

Operating systems※

• DebConf – conference for the Debian operating system, held annually since 2000
• Linux Kernel Developers Summit, annual conference since 2001

Programming languages※

• PyCon – conference for the Python programming language, held several times a year in different locations since 2003
• RubyConf – conference for the Ruby programming language, held once a year in different locations since 2002
• Yet Another Perl Conference – conference for the Perl programming language, held several times a year since 1999

Other※

• Akademy – conference for the KDE desktop environment, held annually in Europe since 1997
• ApacheCon – conference for the Apache HTTP Server, held once or twice each year since 2000
• DjangoCon – conference for the Django web framework, held twice a year (once in Europe and once in the U.S.) since 2008
• DrupalCon – conference for the Drupal content management framework, held twice a year (once in Europe and once in North America) since 2007
• GNOME Users And Developers European Conference – conference for the GNOME desktop environment, held annually in Europe since 2000
• GNUHealthCon – conference for the GNU Health hospital management and digital health ecosystem, held annually since 2010
• WordCamp – event for the WordPress content management system, held frequently around the world since 2007
• X.Org Developers' Conference (XDC) and X Developers' Summit (XDS), annual events since 2005 organized by X.Org Foundation

Defunct※

• BeGeistert – conference for the Haiku operating system, held annually in Europe from 2006 to 2016 (originally a BeOS conference, from 1998 to 2005)
• Desktop Developers' Conference, held from 2004 to 2006
• GCC Summit, held in Ottawa, Ontario, Canada from 2003 to 2010
• Gelato ICE, held each year in the US or Italy by the Gelato Federation from 2001 to 2007
• Joomla World Conference – event for the Joomla content management system, held frequently around the from 2011 to 2019
• Linux Kongress, held in Germany in the autumn from 1994 to 2010
• Linux Symposium, held in Canada in the summer from 1999 to 2014
• Ubuntu Developer Summit, held twice a year (timed with respect to Ubuntu releases), alternating between Europe and North America, from 2004 to 2015
• Libre Graphics Meeting, held yearly in May in Europe or Canada from 2006 to 2021

References※

External links※

• LWN.net Community Calendar – lists upcoming Linux and free/open source software conferences
• Linux Magazin events calendar – continuously updated list of Linux and Open Source conferences
• // foss.events – upcoming and past Free and Open Source Software events in Europe
• FOSS Events in Europe