Apache OpenOffice, OpenServer, Prague Open, Swedish Open, Maharashtra Open, Stockholm Open, Nottingham Open, US Open Series, Mérida Open, Korea Open, Chile Open, Romanian Open, Rouen Open, Luxembourg Open, German Open, Jasmin Open, Slovak Open, Lyon Open, Czech Open (1987–1999), Ostrava Open, WTA Prague Open, Shenzhen Open, Hong Kong Open, Guangzhou Open, WTA Lyon Open, Thailand Open (ATP), Valencia Open, Ecuador Open Quito, Parma Ladies Open, Barcelona Open, Geneva Open, Malaysian Open (tenis), Swiss Open (tenis), WTA Japan Open Tennis Championships, Qatar Open, Hamburg Open, Atlanta Open, Serbia Open, Almaty Open, OpenDocument, OpenTTD

China Open (tenis), Croatia Open Umag, Iași Open 2024, San Diego Open, Andalucia Open 2021, OpenOffice.org Impress, OpenDOAR, Abu Dhabi Open, Japan Open Tennis Championships, Heaven's Open (píseň), Sofia Open, Poland Open, Thailand Open (Pattaya), Ladies Open Lugano, Bangalore Open, Madrid Open, E-Boks Open, ATP Auckland Open, Stuttgart Open, OpenCms, Rio Open, Qatar Ladies Open, AGEL Open 2022, Guadalajara Open, Swedish Open 2017, Rouen Open 2023, Mérida Open Akron 2023, Open-source hardware, Estoril Open (tenis), Swedish Open 2016, Țiriac Open 2024, Korea Open 2022, Córdoba Open, Moselle Open, Open-source licence, Charleston Open, Halle Open, Monterrey Open, Swedish Open 2013, OpenOffice.org Calc, Singapore Tennis Open, Washington Open, Citi Open 2013, The Open Group, I. ČLTK Prague Open 2021, Rouen Open 2024, Open Gate – gymnázium a základní škola, Wuhan Open, Austrian Open Kitzbühel, Düsseldorf Open

Apache OpenOffice, OpenServer, Prague Open, Swedish Open, Maharashtra Open, Stockholm Open, Nottingham Open, US Open Series, Mérida Open, Korea Open, Chile Open, Romanian Open, Rouen Open, Luxembourg Open, German Open, Jasmin Open, Slovak Open, Lyon Open, Czech Open (1987–1999), Ostrava Open, WTA Prague Open, Shenzhen Open, Hong Kong Open, Guangzhou Open, WTA Lyon Open, Thailand Open (ATP), Valencia Open, Ecuador Open Quito, Parma Ladies Open, Barcelona Open, Geneva Open, Malaysian Open (tenis), Swiss Open (tenis), WTA Japan Open Tennis Championships, Qatar Open, Hamburg Open, Atlanta Open, Serbia Open, Almaty Open, OpenDocument, OpenTTD, China Open (tenis), Croatia Open Umag, Iași Open 2024, San Diego Open, Andalucia Open 2021, OpenOffice.org Impress, OpenDOAR, Abu Dhabi Open, Japan Open Tennis Championships, Heaven's Open (píseň), Sofia Open, Poland Open, Thailand Open (Pattaya), Ladies Open Lugano, Bangalore Open, Madrid Open, E-Boks Open, ATP Auckland Open, Stuttgart Open, OpenCms, Rio Open, Qatar Ladies Open, AGEL Open 2022, Guadalajara Open, Swedish Open 2017, Rouen Open 2023, Mérida Open Akron 2023, Open-source hardware, Estoril Open (tenis), Swedish Open 2016, Țiriac Open 2024, Korea Open 2022, Córdoba Open, Moselle Open, Open-source licence, Charleston Open, Halle Open, Monterrey Open, Swedish Open 2013, OpenOffice.org Calc, Singapore Tennis Open, Washington Open, Citi Open 2013, The Open Group, I. ČLTK Prague Open 2021, Rouen Open 2024, Open Gate – gymnázium a základní škola, Wuhan Open, Austrian Open Kitzbühel, Düsseldorf Open, Rouen Open 2022, Zhengzhou Open, Brussels Open, Swedish Open 2015, Welsh Open, OpenStreetMap, Topshelf Open 2013, Katowice Open, Malaysian Open, Kuala Lumpur, Slovenia Open, Portugal Open 2013, I. ČLTK Prague Open 2020, Ordina Open 2009 – muži, Czech Open, Țiriac Open 2025, Brasil Open, Open 13, Rouen Open 2025, Tashkent Open 2017, Citi Open 2022, Zürich Open, Open de Nice Côte d’Azur, Noventi Open 2019, Malaysian Open 2016, Portugal Open, Thailand Open (Chua Chin), Croatia Open Umag 2015, Stockholm Open 2024, UNICEF Open 2010 – muži, Chile Open 2025, Livesport Prague Open 2022, I. ČLTK Prague Open 2022, Seznam juniorských vítězů na US Open, Kia Korea Open 2014, Montpellier Open, Winners Open 2021, Nordea Open 2024, Gijón Open 2022, Tianjin Open, Jiangxi Open, Advantage Cars Prague Open 2023, Estoril Open 2016, Mérida Open Akron 2025, Citi Open 2012 – ženy, BOSS Open 2025, Orange Warsaw Open, Tashkent Open, Malaysian Open, BMW Open 2016, Rio Open 2016, Estoril Open 2015, BOSS Open 2022, Shenzhen Open 2015, Nordea Open 2022, French Open 2008 – smíšená čtyřhra, Moselle Open 2016, Ordina Open 2009 – ženy, UniCredit Czech Open, Claro Open Colombia, Estoril Open 2023