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, Mutua Madrid Open 2018, Libéma Open 2023, Halle Open 2023, Maharashtra Open 2022 - Đôi, 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, Mérida Open 2023, Miami Open 2019, Phần mềm nguồn mở, Ladies Open Lausanne 2022, Watcom C/C++, Generali Open Kitzbühel 2023, Open Graphics Project, Madrid Masters, With Arms Wide Open, WTA Lyon Open 2023, Prague Open 2021, Open 13 2022, Tel Aviv Open 2022, Liên minh thiết bị cầm tay mở, Ladies Open Lausanne 2021, Chile Open 2021, BMW Open 2019 - Đơn, Generali Open Kitzbühel 2022, Open Season: Scared Silly, Srpska Open 2023, Truy cập mở, Tenerife Ladies Open 2021, Transylvania Open 2021, Swedish Open 2022, Open Agriculture, Stockholm Open 2021, Toray Pan Pacific Open 2022, Hamburg European Open 2023, ODF, Qatar ExxonMobil Open 2020, Chennai Open 2022, Winston-Salem Open 2022, ATX Open 2023, Open Sud de France 2022, Winston-Salem Open 2021, Estoril Open 2023

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