The following is a list of computer conferences and other events focused on developing and using

free and open-source software Free and open-source software (FOSS) is software available under a license that grants users the right to use, modify, and distribute the software modified or not to everyone free of charge. FOSS is an inclusive umbrella term encompassing free ...

(FOSS).

General free-software events

Some general-purpose free-software events have ''Linux'' in their name, often because they began as Linux-only events before broadening their focus.

North, Central and South America

*Festival Latinoamericano de Instalación de Software Libre ( FLISOL) – Latin American free software install fest held yearly in all Latin America the same day, on the last Sunday of April * LibrePlanet – Organized yearly by the

Free Software Foundation The Free Software Foundation (FSF) is a 501(c)(3) non-profit organization founded by Richard Stallman on October 4, 1985. The organisation supports the free software movement, with the organization's preference for software being distributed ...

in or around

Boston, Massachusetts Boston is the capital and most populous city in the Commonwealth (U.S. state), Commonwealth of Massachusetts in the United States. The city serves as the cultural and Financial centre, financial center of New England, a region of the Northeas ...

since 2006 * LinuxFest Northwest, held in

Bellingham, Washington Bellingham ( ) is the county seat of Whatcom County, Washington, Whatcom County in the U.S. state of Washington (state), Washington. It lies south of the Canada–United States border, U.S.–Canada border, between Vancouver, British Columbia, ...

in the spring since 2000 * SouthEast LinuxFest, held yearly in June since 2009. * Southern California Linux Expo (SCALE), held in

Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...

yearly since 2002

Europe

* Chaos Communication Congress, held in

Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...

in the week between Christmas and New Year since 1984 * Chemnitz Linux Days, held in

Chemnitz Chemnitz (; from 1953 to 1990: Karl-Marx-Stadt (); ; ) is the third-largest city in the Germany, German States of Germany, state of Saxony after Leipzig and Dresden, and the fourth-largest city in the area of former East Germany after (East Be ...

since 1999 * DevConf.cz, held yearly in

Brno Brno ( , ; ) is a Statutory city (Czech Republic), city in the South Moravian Region of the Czech Republic. Located at the confluence of the Svitava (river), Svitava and Svratka (river), Svratka rivers, Brno has about 403,000 inhabitants, making ...

Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...

since 2009 * Fosscomm, held yearly in a different Greek city since 2008 *

FOSDEM Free and Open source Software Developers' European Meeting (FOSDEM) is an annual software engineering conference. It is non-commercial and volunteer-organized with a focus on free and open-source software. Initiated in 2000, it is usually held d ...

, held in Brussels, Belgium every February since 2001 * FrOSCon, held in Sankt Augustin (near

Bonn Bonn () is a federal city in the German state of North Rhine-Westphalia, located on the banks of the Rhine. With a population exceeding 300,000, it lies about south-southeast of Cologne, in the southernmost part of the Rhine-Ruhr region. This ...

since 2006 * Linux Vacation / Eastern Europe, held in

Belarus Belarus, officially the Republic of Belarus, is a landlocked country in Eastern Europe. It is bordered by Russia to the east and northeast, Ukraine to the south, Poland to the west, and Lithuania and Latvia to the northwest. Belarus spans an a ...

every summer since 2005 * SFSCON, held in Bolzano,

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

since 2004

Asia and Australia

* FOSSASIA, held yearly in

Singapore Singapore, officially the Republic of Singapore, is an island country and city-state in Southeast Asia. The country's territory comprises one main island, 63 satellite islands and islets, and one outlying islet. It is about one degree ...

Vietnam Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...

Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

since 2009 * COSCUP, held yearly in

Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea ...

since 2006 * linux.conf.au, held in

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...

in the (Southern Hemisphere) summer since 1999

International

* Open Source Summit, known before 2017 as "LinuxCon", held several times yearly on various continents since 2009 * Software Freedom Day, international observance since 2004
Open Forum Academy Symposium
academic conference covering questions related to the social, political and economic impact of Open Source

Defunct

* Africa Source, held in 2004 and 2006 * Asia Source, held in 2005, 2007 and 2009 * August Penguin, held yearly in

Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...

from 2004–2018 * FOSS.IN, first known as "Linux Bangalore", from 2001–2012 * Fórum Internacional Software Livre (FISL) – International Free Software Forum, held yearly in

Porto Alegre Porto Alegre (, ; , ; ) is the capital and largest city of the Brazilian Federative units of Brazil, state of Rio Grande do Sul. Its population of roughly 1.4 million inhabitants (2022) makes it the List of largest cities in Brazil, 11th-most p ...

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

(with 7000+ visitors) from 2000–2018 *Free Software and Open Source Symposium (FSOSS), held at Seneca College,

Toronto Toronto ( , locally pronounced or ) is the List of the largest municipalities in Canada by population, most populous city in Canada. It is the capital city of the Provinces and territories of Canada, Canadian province of Ontario. With a p ...

each October from 2001–2018 * FSCONS, held every autumn in

Gothenburg Gothenburg ( ; ) is the List of urban areas in Sweden by population, second-largest city in Sweden, after the capital Stockholm, and the fifth-largest in the Nordic countries. Situated by the Kattegat on the west coast of Sweden, it is the gub ...

Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...

from 2007–2019 * Libre Software Meeting, French name "Rencontres mondiales du logiciel libre", held every July in France or surrounding countries from 2000–2018 * Linux Bier Wanderung, informal event held in a different European country every summer from 1999–2019 * Ontario Linux Fest, held in

, Ontario in the autumn from 2007–2009 * Open Source Day, conference held yearly in

Warsaw Warsaw, officially the Capital City of Warsaw, is the capital and List of cities and towns in Poland, largest city of Poland. The metropolis stands on the Vistula, River Vistula in east-central Poland. Its population is officially estimated at ...

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...

from 2008–2019 * Open Source Developers' Conference (OSDC), held yearly in various countries from 2004–2015 *, a trade show and conference with 10,000 visitors held every year in

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...

from 1999–2014Impressions du Salon Solutions Linux 2010
/ref> * O'Reilly Open Source Convention (OSCON), held each summer in the US from 1999–2019. * LinuxWorld Conference and Expo, briefly also known as "OpenSource World", from 1998–2009 * Wizards of OS, held in Berlin every two years from 1999–2006 * LinuxTag, held in

every summer from 1996–2014

Events for specific free software

Operating systems

* DebConf – conference for the

Debian Debian () is a free and open-source software, free and open source Linux distribution, developed by the Debian Project, which was established by Ian Murdock in August 1993. Debian is one of the oldest operating systems based on the Linux kerne ...

operating system, held yearly since 2000 * Linux Kernel Developers Summit, annual conference since 2001

Programming languages

* PyCon – conference for the Python programming language, held several times yearly in various locations since 2003 * RubyConf – conference for the

Ruby Ruby is a pinkish-red-to-blood-red-colored gemstone, a variety of the mineral corundum ( aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapph ...

programming language, held once yearly in various locations since 2002 * Yet Another Perl Conference – conference for the

Perl Perl is a high-level, general-purpose, interpreted, dynamic programming language. Though Perl is not officially an acronym, there are various backronyms in use, including "Practical Extraction and Reporting Language". Perl was developed ...

programming language, held several times yearly since 1999

Other

* Akademy – conference for the

KDE KDE is an international free software community that develops free and open-source software. As a central development hub, it provides tools and resources that enable collaborative work on its projects. Its products include the KDE Plasma gra ...

desktop environment, held yearly in Europe since 1997 * ApacheCon – conference for the

Apache HTTP Server The Apache HTTP Server ( ) is a free and open-source software, free and open-source cross-platform web server, released under the terms of Apache License, Apache License 2.0. It is developed and maintained by a community of developers under the ...

, held once or twice yearly since 2000 * DjangoCon – conference for the Django web framework, held twice yearly (once each in Europe or the U.S.) since 2008 * DrupalCon – conference for the Drupal content management framework, held twice yearly (once each in Europe or North America) since 2007 *GNOME Users And Developers European Conference ( GUADEC) – conference for the GNOME desktop environment, held yearly in Europe since 2000 * GNUHealthCon – conference for the GNU Health hospital management and digital health ecosystem, held yearly since 2010 * WordCamp – event for the

WordPress WordPress (WP, or WordPress.org) is a web content management system. It was originally created as a tool to publish blogs but has evolved to support publishing other web content, including more traditional websites, electronic mailing list, ma ...

content management system, held often around the world since 2007 * X.Org Developers' Conference (XDC) and X Developers' Summit (XDS), annual events since 2005 organized by X.Org Foundation * Libre Graphics Meeting, held yearly in May in Europe or Canada since 2006

Defunct

* BeGeistert – conference for the

Haiku is a type of short form poetry that originated in Japan. Traditional Japanese haiku consist of three phrases composed of 17 Mora (linguistics), morae (called ''On (Japanese prosody), on'' in Japanese) in a 5, 7, 5 pattern; that include a ''kire ...

operating system, held yearly in Europe from 2006–2016 (originally a BeOS conference, from 1998–2005) * Desktop Developers' Conference, from 2004–2006 * GCC Summit, held in

Ottawa, Ontario Ottawa is the capital city of Canada. It is located in the southern Ontario, southern portion of the province of Ontario, at the confluence of the Ottawa River and the Rideau River. Ottawa borders Gatineau, Gatineau, Quebec, and forms the cor ...

, Canada from 2003–2010 * Gelato ICE, held yearly in the US or Italy by the Gelato Federation from 2001–2007 * Joomla World Conference – event for the Joomla content management system, held often around the world from 2011–2019 * Linux Kongress, held in

in the autumn from 1994–2010 * Linux Symposium, held in

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

in the summer from 1999–2014 * Ubuntu Developer Summit, held twice yearly (timed with respect to

Ubuntu Ubuntu ( ) is a Linux distribution based on Debian and composed primarily of free and open-source software. Developed by the British company Canonical (company), Canonical and a community of contributors under a Meritocracy, meritocratic gover ...

releases), alternating between Europe and North America, from 2004–2015

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
{{FOSS *

Free software Free software, libre software, libreware sometimes known as freedom-respecting software is computer software distributed open-source license, under terms that allow users to run the software for any purpose as well as to study, change, distribut ...