# Pattern Languages of Programs

Pattern Languages of Programs is a group of annual conferences sponsored by The Hillside Group. The purpose of these conferences is to develop and refine the art of software design patterns. Most of the effort focuses on developing a textual presentation of a pattern such that it becomes easy to understand and apply. This is typically done in a writers' workshop setting.

## The flagship conference

The flagship conference is called the Pattern Languages of Programs conference, abbreviated as PLoP. PLoP has been held in the U.S.A. since 1994. Until 2004 it was held annually at Allerton Park in Monticello, Illinois, a property of the University of Illinois at Urbana Champaign. Since then, its location has alternated between Allerton park and being co-located with OOPSLA, a large computer science conference, with the Agile Conference in 2009, and with PUARL in 2018. The 27th PLoP will be held in Keystone, Colorado.
Notable people who chaired the conference in the past include Ward Cunningham, Richard Gabriel, Ralph Johnson, John Vlissides and Kent Beck.
PLoP (and several other Pattern Languages of Programs conferences) are sponsored by The Hillside Group, a U.S.-based non-profit organization that holds the PLoP trademark and the rights to the conference.

## Other PLoP conferences
### AsianPLoP

AsianPLoP is the PLoP event for the Asian community, commonly featuring patterns in both English and Japanese language.
| Year | Location | Conference Chair | Program Chair |
| AsianPLoP 2015 | Tokyo, Japan | | |
| AsianPLoP 2014 | Tokyo, Japan | Hironori Washizaki | Yasunobu Kawaguchi, Takashi Iba |
| AsianPLoP 2011 | Tokyo, Japan | | Masanari Motohashi |
| AsianPLoP 2010 | Tokyo, Japan | Eiichi Hanyuda | Hironori Washizaki, Nobukazu Yoshioka |

### ChiliPLoP

ChiliPLoP is an annual conference featuring "hot topics" of the PLoP community. It is held in the U.S. since 1998.
| Year | Location | Conference Chair | Program Chair |
| ChiliPLoP 2011 | Carefree, Arizona, United States | Rick Mercer | Eugene Wallingford |
| ChiliPLoP 2010 | Carefree, Arizona, United States | Rick Mercer | Ralph Johnson |
| ChiliPLoP 1997 | Wickenburg Inn, Arizona, United States | Linda Rising | |

### EuroPLoP

Held since 1996 in Kloster Irsee, Germany (former monastery, now Swabian Conference and Education Centre).
| Year | Location | Conference Chair | Program Chair |
| EuroPLoP 2017 | Kloster Irsee, Bavaria, Germany | Christian Kreiner | Christopher Preschern |
| EuroPLoP 2016 | Kloster Irsee, Bavaria, Germany | Christopher Preschern | Veli-Pekka Eloranta |
| EuroPLoP 2015 | Kloster Irsee, Bavaria, Germany | Claudius Link | Veli-Pekka Eloranta |
| EuroPLoP 2014 | Kloster Irsee, Bavaria, Germany | Veli-Pekka Eloranta | Uwe van Heesch |
| EuroPLoP 2013 | Kloster Irsee, Bavaria, Germany | Uwe van Heesch | Christian Kohls |
| EuroPLoP 2012 | Kloster Irsee, Bavaria, Germany | Christian Kohls | Andreas Fiesser |
| EuroPLoP 2011 | Kloster Irsee, Bavaria, Germany | Andreas Fiesser | Paris Avgeriou |
| EuroPLoP 2010 | Kloster Irsee, Bavaria, Germany | Paris Avgeriou | Michael Weiss |
| EuroPLoP 2009 | Kloster Irsee, Bavaria, Germany | Michael Weiss | Allan Kelly |
| EuroPLoP 2008 | Kloster Irsee, Bavaria, Germany | Allan Kelly | Till Schümmer |
| EuroPLoP 2007 | Kloster Irsee, Bavaria, Germany | Till Schümmer | Lise Hvatum |
| EuroPLoP 2006 | Kloster Irsee, Bavaria, Germany | Lise Hvatum | Uwe Zdun |
| EuroPLoP 2005 | Kloster Irsee, Bavaria, Germany | Uwe Zdun | Andy Longshaw |
| EuroPLoP 2004 | Kloster Irsee, Bavaria, Germany | Dietmar Schütz | Klaus Marquardt |
| EuroPLoP 2003 | Kloster Irsee, Bavaria, Germany | Dietmar Schütz | Kevlin Henney |
| EuroPLoP 2002 | Kloster Irsee, Bavaria, Germany | Jutta Eckstein, Christa Schwanninger | Alan O'Callaghan |
| EuroPLoP 2001 | Kloster Irsee, Bavaria, Germany | Jutta Eckstein, Christa Schwanninger | Andreas Rüping |
| EuroPLoP 2000 | Kloster Irsee, Bavaria, Germany | Andreas Rüping | Martine Devos |
| EuroPLoP 1999 | Kloster Irsee, Bavaria, Germany | Martine Devos | Paul Dyson |
| EuroPLoP 1998 | Kloster Irsee, Bavaria, Germany | Paul Dyson | Jens Coldewey |
| EuroPLoP 1997 | Kloster Irsee, Bavaria, Germany | Frank Buschmann | Dirk Riehle |
| EuroPLoP 1996 | Kloster Irsee, Bavaria, Germany | Frank Buschmann | Bruce Anderson |

### KoalaPLoP

Held in Australia or New Zealand.
| Year | Location | Conference Chair | Program Chair |
| KoalaPLoP 2002 | Melbourne, Australia | Paul Taylor | James Noble, Brian Foote |
| KoalaPLoP 2000 | Melbourne, Australia | Darius Zakrzewski | Jim Coplien |

### MensorePLoP

MensorePLoP '2001, held on the island of Okinawa, Japan.
| Year | Location | Conference Chair | Program Chair |
| MensorePLoP '2001 | Okinawa, Japan | Terunobu Fujino | Jim Coplien |

### MiniPLoP

MiniPLoP'2011, held in IME/USP, São Paulo, Brazil.
| Year | Location | Conference Chair | Program Chair |
| MiniPLoP'2011 | São Paulo, Brazil | Eduardo Martins Guerra, Fabio Kon | Claudio Sant'Anna, Joseph W. Yoder |

### ScrumPLoP

| Year | Location |
| ScrumPLoP 2019 | Quinta da Pacheca, Portugal |
| ScrumPLoP 2018 | Quinta da Pacheca, Portugal |
| ScrumPLoP 2017 | Quinta da Pacheca, Portugal |
| ScrumPLoP 2016 | Quinta da Pacheca, Portugal |
| ScrumPLoP 2015 | Quinta da Pacheca, Portugal |
| ScrumPLoP 2014 | Helsingør, Denmark |
| ScrumPLoP 2013 | Helsingør, Denmark |
| ScrumPLoP 2012 | Helsingør, Denmark |
| ScrumPLoP 2011 | Helsingør, Denmark |
| ScrumPLoP 2010 | Stora Nyteboda, Sweden |

### SugarLoafPLoP

SugarLoafPLoP, held in Brazil.
| Year | Location | Conference Chair | Program Chair |
| SugarLoafPLoP 2012 | Natal, RN, Brazil | Sergio Soares and Uirá Kulesza | Mary Lynn Manns and Rosana T. Vaccare Braga |
| SugarLoafPLoP 2010 | Salvador, Bahia, Brazil | Christina Chavez and Claudio Sant'Anna | Rebecca Wirfs-Brock and Uirá Kulesza |
| SugarLoafPLoP 2001 | Rio de Janeiro, Brazil | Rosana Maria Castro Andrade and Claudia M. L Werner | James O. Coplien and Jorge L. Ortega Arjona |

### VikingPLoP

VikingPLoP, held mostly in the Scandinavian countries, but also moving around in Europe.
| Year | Location | Program Chairs |
| VikingPLoP 2002 | Höjstrupgård castle near Helsingör in Denmark, Denmark | Kristian Elof Soerensen |
| VikingPLoP 2003 | Bergen, Norway | Cecilia Haskins |
| VikingPLoP 2004 | Uppsala, Sweden | Rebecca Rikner |
| VikingPLoP 2005 | Helsinki, Finland | Juha Pärssinen |
| VikingPLoP 2007 | Bergen, Norway | Cecilia Haskins |
| VikingPLoP 2008 | Stora Nyteboda, Sweden | |
| VikingPLoP 2012 | Saariselkä, Finland | Veli-Pekka Eloranta and Marko Leppänen |
| VikingPLoP 2013 | Ikaalinen, Finland | Veli-Pekka Eloranta and Marko Leppänen |
| VikingPLoP 2014 | Sagadi manor, Estonia | Jari Rauhamäki and Veli-Pekka Eloranta |
| VikingPLoP 2015 | Ribaritsa resort, Bulgaria | Jari Rauhamäki and Elissaveta Gourova |
| VikingPLoP 2016 | Wassenaar, Netherlands | Jari Rauhamäki and Christian Köppe |
| VikingPLoP 2017 | Grube/Schleswig-Holstein, Germany | Christian Kohls and Klaus Marquardt |
| VikingPLoP 2018 (cancelled) | Fredensborg, Denmark | Bogdana Botez |

## Publications

The conference proceedings are typically published locally as technical reports of a sponsoring university. From 1998 to 2007, EuroPLoP papers were published annually by the German publisher Universitätsverlag Konstanz.
Between 2008 and 2012 proceedings appeared in several places. CEUR-WS holds papers for 2008 and papers for 2009 (in addition a complete set of 2009 papers are available from Lulu.com in printed and PDF formats). A printed version of EuroPLoP 2012 papers are also available on Lulu.com.
Since 2012 a subset of EuroPLoP papers have been submitted to the ACM Digital Library.
After the conference, authors are given the chance to submit a revised paper for publication in the book series Pattern Languages of Program Design by Addison Wesley.
In 2007, an academic journal was started, called Transactions on Pattern Languages of Programming. The editors-in-chief are James Noble and Ralph Johnson and the European editor is Uwe Zdun. The journal is published by Springer-Verlag.