[6] In 2020–2023, in-person Topcoder Open finals were cancelled and replaced by virtual events due to the impact of the COVID-19 pandemic and the subsequent economic slowdown.

Here is the alphabetical list of all competition tracks ever present at TCO: Timeline: 2001 – 2022 Champions: Gennady Korotkevich tourist (2022, 2021, 2020, 2019, 2014); Petr Mitrichev Petr (2018, 2015, 2013, 2006); Yuhao Du xudyh (2017); Makoto Soejima rng_58 (2016, 2011, 2010); Egor Kulikov Egor (2012); Bin Jin crazyb0y (2009); Tomasz Czajka [pl] tomek (2008, 2004, 2003); Jan Kuipers Jan_Kuipers (2007); Eryk Kopczyński [pl] Eryx (2005); John Dethridge John Dethridge (2002); jonmac (2001).

It followed the format of regular 1.5 hours Single Round Matches:[8] Timeline: 2009 – 2014, 2016 – 2022 Champions: Fatih Tas neonray (2022); Thomas Kranitsas thomaskranitsas (2021); Victor Roberto Gomes da Cunha cunhavictor (2020); Dilip Kumar Thapa veshu (2019); Dmitry Kondakov kondakovdmitry (2018); Akinwale Ariwodola akinwale (2017, 2014); vvvpig (2016); Pratap Koritala supercharger (2013); Lan Luo hohosky (2012); Yang Li Yeung (2011); Margaryta Skrypachova Margarita (2010); Ninghai Huang PE (2009).

Details: This provided competitors with client requirements for a software product, and they were asked to create a wireframe mockup of the future app or website.

Timeline: 2007 – 2022 Champions: Przemysław Dębiak [pl] Psyho (2022, 2017, 2016, 2014, 2013, 2011, 2008); Catalin-Stefan Tiseanu CatalinT (2021); Hironao Tsutsumida iehn (2020); Gennady Korotkevich tourist (2019, 2018); Tiancheng Lou ACRush (2015); Won-Seok Yoo ainu7 (2012); Yoichi Iwata wata (2010); Andrey Lopatin KOTEHOK (2009); Mateusz Zotkiewicz Mojito1 (2007).

Timeline: 2004–2014 Champions: Meng Wang albertwang (2014, 2013); Michael Paweska argolite (2012, 2010); WuJian Ye BLE (2011); Olexiy Sadovnikov saarixx (2009); Tim Roberts Pops (2008, 2006); Sergey Kalinchenko kyky (2007); Nikolay Archak nicka81 (2005); Adrian Carcu adic (2004).

Timeline: 2004 – 2022 Champions: xxcxy (2022); Jiang Liwu jiangliwu (2021, 2019); Dr. Sergey Pogodin birdofpreyru (2020, 2017); Ngoc Pham ngoctay (2018); Łukasz Sentkiewicz Sky_ (2016, 2015, 2014); Zhijie Liu morehappiness (2013); Yang Li Yeung (2012, 2010); Franklin Guevarra j3_guile (2011); GuanZhuo Jin Standlove (2009 – Architecture, 2004); Pablo Wolfus pulky (2009 – Assembly); Yanbo Wu assistant (2009 – Component Development); Piotr Paweska AleaActaEst (2009 – Specification); Romano Silva romanoTC (2008); Feng He hefeng (2007); Sindunata Sudarmagi sindu (2006); Qi Liu visualage (2005).

Details: Competitors were provided with design specifications for a website or web-application, and they were required to create a working prototype of the frontend within approximately 4 hours.