Open Space on Open Space (OSonOS) Conferences are gatherings of Open Space Technology practitioners, their clients, curious people, business people, scientists, community activists, and others, all with some interest or experience in Open Space — in and from different places around the world. They are all about Open Space and are held entirely in Open Space.
The 32nd Annual World Open Space on Open Space
our international practice conference, will be
in The Netherlands in Fall 2026 (details coming)
These events date back to the early 1990’s when they were initiated and hosted by OST originator Harrison Owen, outside Washington DC. In the mid-90’s the annual OSonOS began to move around… Toronto, Monterrey, Chicago. In 2000 it went intercontinental… Germany, Canada (western), Australia, Sweden, India, Canada (eastern), Moscow and Ukraine, Taiwan and, and and… it’s still going.
A number of “other” events — local, regional/language, national, international, worldwide — had also sprung up, beginning as early as 2001 in Germany and Haiti, and later on in some other places. Many of these had international attendance. In 2015, there was even a 4-day global Virtual OSonOS.
Past Proceedings from international OSonOS Conferences, with Locations and Lead Hosts
- 31st Limuru, Kenya 2025 – Paula Kahumbu and Joan Ngige – proceedings
- 30th Istanbul, Turkey 2024 – Funda Oral, Yeşim Karayel and Bike Küçük – proceedings (google drive) | video (2mins)
- 29th Berlin, Germany 2023 – hosted by Boscop and reinblau – proceedings (pdf)
- 28th Bilbao Basque Country 2022 – Gentza Eleder Aurtenetxe and Gune Irekiaren Lagunak (Open Space Friends-Basque Country) – proceedings
- 27th Washington DC USA 2019 – Barry Owen and Open Space Institute US – proceedings
- 26th Reykjavík, Iceland 2018 – Kári Gunnarsson and Ingibjörg Gísladóttir – proceedings (pdf) and HarrisonOwenVideo
- 25th Tainan, Taiwan 2017 – Jane Lewis and Sharon Wu
- 24th Manila, Philippines 2016 – Sharon Joy Berlin-Chao at SEAMEO INNOTECH – proceedings (pdf)
- 23rd Krakow, Poland 2015 – Karolina Iwa – proceedings (pdf)
- 1st Virtual Open Space on Open Space (VOSonOS), World-Around, July 2015, Michael Herman and Lucas Cioffi at vosonos.qiqochat.com | invitation | full proceedings
- 22nd Belgrade, Serbia 2014 – Jasmina Nikolic
- 21st St Petersburg, Florida 2013 – Suzanne Daigle – https://osius.org/wosonos2013
- 20th London 2012 – Phelim McDermott
- 19th Chile 2011 – Juan Luis Walker – libro de actas.pdf
- 18th Berlin 2010 – Michael M Pannwitz – Proceedings, Action Planning/Next Steps, Commemorative Book and WOSonOS 2010 in Open Space Worldscape
- 17th Taiwan 2009 – Gail West
- 16th San Francisco, California USA 2008 – Lisa Heft – proceeds.pdf
- 15th Kiev Ukraine 2007 – Yana Demenko – Notes.pdf and NextSteps.pdf
- 14th Moscow, Russia 2006 – Raffi Aftandelian – proceeds.pdf
- 13th Halifax, Nova Scotia Canada 2005 – Judi Richardson – proceeds.pdf
- 12th Goa India 2004 – Janet Pinto – proceeds.pdf
- 11th SwenMark (Sweden/Denmark) 2003 – Thomas Herrmann – Proceeds.OnlineWikiDemo
- 10th Marysville Australia 2002 – Brian Bainbridge – proceeds.pdf | ProfessionalVideo | Proceeds.OnlineWikiDemo
- 9th Vancouver Canada 2001 – Chris Corrigan and Laurel Doersam – Proceedings.pdf
- 8th Berlin Germany 2000 – Michael M Pannwitz – Photos
- 7th Chicago Illinois USA 1999 – Michael Herman and Sheila Isakson – Invite | Proceeds.pdf | Photos
- 6th Monterey California USA 1998 – PeggyHolman – Proceeds.pdf | Proceeds.htm
- 5th Toronto, Ontario, Canada 1997 – Larry Peterson and Birgitt Williams
- Dulles Airport – 1st through 4th Annual Conferences 1993-1996, Harrison Owen
Local, regional and international OSonOS events – archived invites and reports