The Open Championship, Open Championship 2018, Open Your Heart, Eyes Open (bài hát), Noventi Open 2019, Office Open XML, BMW Open 2019, Open 13 2019, Canadian Open, Mutua Madrid Open 2017, 2 on 2 Open Ice Challenge, Miami Open 2017, Zug Open, Maharashtra Open 2022, Open Automotive Alliance, Barcelona Open Banco Sabadell 2011, Chengdu Open, Moselle Open 2021, OpenStreetMap, OpenOffice.org, Eyes Wide Open, Tata Open Maharashtra 2023, Open Road Films, Mutua Madrid Open 2019, Open Sud de France 2019, Rio Open 2022, Qatar ExxonMobil Open 2019, Rio Open 2023, European Open (quần vợt), Halle Open 2022, European Open 2021, European Open 2022, Erste Bank Open 2021, Maharashtra Open 2022 - Đôi, Mutua Madrid Open 2018, BMW Open 2019 - Đôi, Halle Open 2023, Libéma Open 2023, Halle Open 2021, Miami Masters, OpenType

Mùa săn (phim 2006), Qatar Total Open 2023, OpenERP, Atlanta Open 2021, Erste Bank Open 2022, St. Petersburg Open 2021, Ladies Open Lausanne 2023, Moselle Open 2022, Generali Open Kitzbühel 2021, Miami Open 2019, Bad Homburg Open 2023, WTA Poland Open 2021, Phần mềm nguồn mở, Mérida Open 2023, Swedish Open 2023, Watcom C/C++, OpenAI, Ladies Open Lausanne 2022, Chile Open 2023, With Arms Wide Open, Generali Open Kitzbühel 2023, WTA Lyon Open 2023, Open Graphics Project, Prague Open 2021, Madrid Masters, Chile Open 2021, Open 13 2022, Tel Aviv Open 2022, Liên minh thiết bị cầm tay mở, Truy cập mở, Generali Open Kitzbühel 2022, Ladies Open Lausanne 2021, BMW Open 2019 - Đơn, Open Season: Scared Silly, Stockholm Open 2021, Toray Pan Pacific Open 2022, Srpska Open 2023, ODF, Transylvania Open 2021, Tenerife Ladies Open 2021, Open Agriculture, Open Sud de France 2022, Swedish Open 2022, Estoril Open 2023, Hamburg European Open 2023, ABN AMRO Open 2023, Winston-Salem Open 2022, Qatar ExxonMobil Open 2020, ATX Open 2023, Winston-Salem Open 2021

The Open Championship, Open Championship 2018, Open Your Heart, Eyes Open (bài hát), Noventi Open 2019, Office Open XML, BMW Open 2019, Open 13 2019, Canadian Open, Mutua Madrid Open 2017, 2 on 2 Open Ice Challenge, Miami Open 2017, Zug Open, Maharashtra Open 2022, Open Automotive Alliance, Barcelona Open Banco Sabadell 2011, Chengdu Open, Moselle Open 2021, OpenStreetMap, OpenOffice.org, Eyes Wide Open, Tata Open Maharashtra 2023, Open Road Films, Mutua Madrid Open 2019, Open Sud de France 2019, Rio Open 2022, Qatar ExxonMobil Open 2019, Rio Open 2023, European Open (quần vợt), Halle Open 2022, European Open 2021, European Open 2022, Erste Bank Open 2021, Maharashtra Open 2022 - Đôi, Mutua Madrid Open 2018, BMW Open 2019 - Đôi, Halle Open 2023, Libéma Open 2023, Halle Open 2021, Miami Masters, OpenType, Mùa săn (phim 2006), Qatar Total Open 2023, OpenERP, Atlanta Open 2021, Erste Bank Open 2022, St. Petersburg Open 2021, Ladies Open Lausanne 2023, Moselle Open 2022, Generali Open Kitzbühel 2021, Miami Open 2019, Bad Homburg Open 2023, WTA Poland Open 2021, Phần mềm nguồn mở, Mérida Open 2023, Swedish Open 2023, Watcom C/C++, OpenAI, Ladies Open Lausanne 2022, Chile Open 2023, With Arms Wide Open, Generali Open Kitzbühel 2023, WTA Lyon Open 2023, Open Graphics Project, Prague Open 2021, Madrid Masters, Chile Open 2021, Open 13 2022, Tel Aviv Open 2022, Liên minh thiết bị cầm tay mở, Truy cập mở, Generali Open Kitzbühel 2022, Ladies Open Lausanne 2021, BMW Open 2019 - Đơn, Open Season: Scared Silly, Stockholm Open 2021, Toray Pan Pacific Open 2022, Srpska Open 2023, ODF, Transylvania Open 2021, Tenerife Ladies Open 2021, Open Agriculture, Open Sud de France 2022, Swedish Open 2022, Estoril Open 2023, Hamburg European Open 2023, ABN AMRO Open 2023, Winston-Salem Open 2022, Qatar ExxonMobil Open 2020, ATX Open 2023, Winston-Salem Open 2021, Barcelona Open Banco Sabadell 2011 - Vòng loại đơn, Croatia Open Umag 2021, Chennai Open 2022, Open Sud de France 2022 - Đôi, BMW Open 2023, Maharashtra Open 2022 - Đơn, Argentina Open 2023, Sofia Open 2021, Open 13 2021, VIA OpenBook, Qatar ExxonMobil Open 2022, The Phantom of the Open, Open Arms (bài hát của Journey), WTA Poland Open 2022, Prague Open 2022, Barcelona Open Banco Sabadell 2019, Qatar Total Open 2021, Open 13 Provence 2023, Swiss Open Gstaad 2023, Giải quần vợt Mỹ Mở rộng, Prague Open 2023, Mutua Madrid Open 2019 - Đôi nam, Córdoba Open 2023, Bad Homburg Open 2022, Croatia Open Umag 2023, Andalucía Open 2021, Swedish Open 2021, Gerry Weber Open 2018, Apache OpenOffice, Delray Beach Open 2022, Giải quần vợt Mỹ Mở rộng 2019, Libéma Open 2022, Abu Dhabi Open 2023, Croatia Open Umag 2022, Nottingham Open 2022, OpenStack, BNP Paribas Open 2019, WTA Poland Open 2023, Quỹ Xã hội Mở, WTA German Open 2023, Western & Southern Open 2021, Hamburg European Open 2022, OpenSocial, Bad Homburg Open 2021, OpenSSL, Qatar Total Open 2022, Qatar ExxonMobil Open 2021, ATP Hong Kong Tennis Open 2025, Sáng kiến nguồn mở, Libéma Open 2022 - Đôi nữ, Sardegna Open 2021, Swiss Open Gstaad 2021, Courmayeur Ladies Open 2021, WTA Lyon Open 2022, Stockholm Open 2022, Córdoba Open 2022, Estoril Open 2021, OpenOffice.org Impress, Los Cabos Open 2023, BGL Luxembourg Open 2021