Open
Open source
Open data
Open textbook
Open standard
Open-source film
Open Season (film series)
Open-source car
Open collector
The Open Championship
Open-design movement
Doors Open Days
Open-source governance
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Open-pit mining
Canada Open
Open House London
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Open-source religion
Open world
The Open Definition
Open plan
Australian Open
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Open-access repository
Open access in Belgium
Open.Michigan
Open marriage
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X/Open
Open University
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Open-Sankoré
Open-source software development
Open list
Taiwan Open (golf)
Open House
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Open-work charm
Senior Open Championship
Open-wheel car
Open education
Open the Door
Chicago Open
Irish Open (golf)
Open–closed principle
Kenya Open
Open gaming
Hybrid open-access journal
KSB Open
Open-ended
Open-source robotics
Garden Open
The Open Source Definition
Mizuno Open
Irish Poker Open
Open-access monograph
Open Graphics Project
Phoenix Open
Wuhan Open
Open Firmware
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Indonesia Open (golf)
OpenDocument
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Open E
Western Open
Open letter
Open-Xchange
Open Bogotá
Open Cycle
Open chord
Open access in France
Victorian Open
2007 U.S. Open (golf)
Cincinnati Open
Thailand Open (golf)
Open Season
Open Knowledge Foundation
Open business
Open Access Week
Open-source license
Open-access mandate
Open problem
Brussels Open
Thailand Open
Open classroom
Nursing Open
U.S. Open Pool Championship
The Open Ecology Journal
Open Door
Open-source ventilator
Open-mid vowel
Business models for open-source software
Swedish Open
North Dakota Open
Open architecture
Open de Portugal
Women's British Open
Open Up
Korea Open (golf)
Taipei Open (badminton)
2005 U.S. Open (golf)
Dallas Open
Free and open-source software
Gates Open Research
Open constituencies
Claro Open Floridablanca
BMJ Open
Heritage Open Days
Polish Open (golf)
Open educational practices
List of U.S. Open pool championships
Open government
Danish Open (golf)
Open space reserve
Yomiuri Open
Open 13
OpenCL
Biology Open
Open de Limoges
Maharashtra Open
International Open Series
Western Australian Open
Open Doors
Open book
Wide Open
OpenBSD
List of open-source video games
Open-air museum
Haninge Ladies Open
Moselle Open
Alberta Open
2005 European Judo Open Championships
1979 U.S. Open (golf)
US Open Series
Open-container law
List of US Open singles finalists during the Open Era
British Open Squash Championships
U.S. Open (golf)
Open implementation
Poznań Open
Open air
Open Theology
Valero Texas Open
2007 US Open (tennis)
2004 European Judo Open Championships
Hylo Open
Open system
1984 U.S. Open (golf)
US Open (tennis)
U.S. Open (bowling)
2004 U.S. Open (golf)
Busan Open
Maruman Open
Open Medicine
Open Science Infrastructure
Danish Open (tennis)
1979 US Open – Women's singles
Open defecation
Open Quaternary
2023 Open Championship
Almost open map
Near-open central vowel
Open market operation
Open access in Ukraine
Lusaka Open
Italian Open (golf)
2017 Shenzhen Open – Singles
Open research
Open space
Canadian Open (golf)
Open heart
Open end
The Open Group
Open Fire
Open-source video game
2006 European Judo Open Championships
Zimbabwe Open
Sreenarayanaguru Open University
Dr. B.R. Ambedkar Open University
Hoylake Open Championships
Open proxy
Shreveport Open
Mexican Open (golf)
Brasil Open
2007 European Judo Open Championships
Open Cascade Technology
1986 US Open – Men's singles
Open G tuning
California State Open
List of French Open singles finalists during the Open Era
Open Agriculture
Open-loop controller
1968 US Open – Women's singles
Open 50