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, Maharashtra Open 2022, Zug Open, Barcelona Open Banco Sabadell 2011, Chengdu Open, OpenStreetMap, OpenOffice.org, Open Automotive Alliance, Moselle Open 2021, Tata Open Maharashtra 2023, Eyes Wide Open, Open Road Films, Mutua Madrid Open 2019, Open Sud de France 2019, Qatar ExxonMobil Open 2019, European Open (quần vợt), Rio Open 2023, European Open 2021, Rio Open 2022, Halle Open 2022, European Open 2022, BMW Open 2019 - Đôi, Maharashtra Open 2022 - Đôi, Mutua Madrid Open 2018, Libéma Open 2023, Halle Open 2023, Erste Bank Open 2021, Halle Open 2021, Miami Masters, OpenType

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