| 2022 | 18 | OpenSym 2022: The 18th International Symposium on Open Collaboration, Madrid, Spain, September 7 - 9, 2022 OSS 2022 & OpenSym 2022 | Madrid | 2022-09-07/09 |
| 2021 | 17 | OpenSym 2021: 17th International Symposium on Open Collaboration, Virtual Event, Spain, September 15-17, 2021 | Spain | 2021-09-15/17 |
| 2020 | 16 | OpenSym 2020: 16th International Symposium on Open Collaboration, Virtual Conference, Spain, August 26-27, 2020 | Círculo de Bellas Artes | 2020-08-25/27 |
| 2019 | 15 | 15th International Symposium on Open Collaboration OPENSYM 2019, WIKIS | Skövde | 2019-08-20/22 |
| 2018 | 14 | 14th International Symposium on Open Collaboration, OPENSYM 2018, WIKIS | Paris | 2018-08-22/24 |
| 2017 | 13 | International Symposium on Open Collaboration OPENSYM 2017, WIKIS | Galway | 2017-08-23/25 |
| 2017 | 13 | Companion to the Proceedings of the 13th International Symposium on Open Collaboration, OpenSym 2017, Galway, Ireland, August 23-25, 2017 | Galway | |
| 2016 | 12 | 12th International Symposium on Open Collaboration OPENSYM 2016, WIKIS | Berlin | 2016-08-17/19 |
| 2016 | 12 | Companion to the Proceedings of the 12th International Symposium on Open Collaboration, OpenSym 2016, Berlin, Germany, August 17-19, 2016 | Berlin | |
| 2015 | 11 | 11th International Symposium on Open Collaboration OpenSym 2015, WIKIS | San Francisco | 2015-08-19/21 |
| 2015 | 11 | Companion to the Proceedings of the 11th International Symposium on Open Collaboration, OpenSym 2015, San Francisco, California, USA, August 19-21, 2015 | San Francisco | |
| 2014 | | 10th International Symposium on Open Collaboration OPENSYM 2014, WIKIS | Berlin | 2014-08-27/29 |
| 2013 | 9 | 9th International Symposium on Open Collaboration OPENSYM 2013, WIKIS | Hong Kong | 2013-08-05/07 |
| 2012 | | Proceedings of the Eighth Annual International Symposium on Wikis and Open Collaboration, WikiSym 2012, Austria, August 27 - 29, 2012 WIKIS | Linz | 2012-08-27 |
| 2011 | 7 | Proceedings of the 7th International Symposium on Wikis and Open Collaboration, 2011, Mountain View, CA, USA, October 3-5, 2011 WIKIS | Mountain View | 2011-10-03/05 |
| 2010 | 6 | Proceedings of the 6th International Symposium on Wikis and Open Collaboration, 2010, Gdansk, Poland, July 7-9, 2010 WIKIS | Gdańsk | 2010-07-07/09 |
| 2009 | | Proceedings of the 2009 International Symposium on Wikis, 2009, Orlando, Florida, USA, October 25-27, 2009 WIKIS | Orlando | 2009-10-25/27 |
| 2008 | | Proceedings of the 2008 International Symposium on Wikis, 2008, Porto, Portugal, September 8-10, 2008 WIKIS | Porto | 2008-09-08/10 |
| 2007 | | Proceedings of the 2007 International Symposium on Wikis, 2007, Montreal, Quebec, Canada, October 21-25, 2007 WIKIS | Montreal | 2007-10-21/25 |
| 2006 | | Proceedings of the 2006 International Symposium on Wikis, 2006, Odense, Denmark, August 21-23, 2006 WIKIS | Odense | 2006-08-21/23 |
| 2005 | | Proceedings of the 2005 International Symposium on Wikis, 2005, San Diego, California, USA, October 16-18, 2005 WIKIS | San Diego | 2005-10-16/18 |
