Cốc Cốc

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Cốc Cốc
Developer(s)Cốc Cốc
Initial release14 May 2013 (2013-05-14)
Stable release(s)
; Windows

95.0.4638.84 (December 2, 2021; 11 months ago (2021-12-02)[1])


95.0.4638.88 (December 12, 2021; 11 months ago (2021-12-12)[2])


102.0.34 (December 24, 2021; 11 months ago (2021-12-24)[3])


(varies with device) (December 25, 2021; 11 months ago (2021-12-25)[4])

Microsoft Store (Xbox One, Windows 10, Windows 8 Mobile)

95.0.214 (May 1, 2021; 18 months ago (2021-05-01)[5]) [±]

Written inC++, Assembly, Python, JavaScript, Java
EngineChromium open source code
Operating system
PlatformIA-32, X86-64
Included with
Available inVietnamese, English
TypeWeb browser, mobile browser

Cốc Cốc browser (Vietnamese: [kə̌wkp kə̌wkp]; meaning "knock knock"[6] and previously Cờ Rôm+ Vietnamese: [kə̀ː rōm]; ‘Chrome Plus’) is a freeware web browser focused on the Vietnamese market, developed by Vietnamese company Cốc Cốc and based on Chromium open source code.[7] Cốc Cốc is available for Windows, Windows Phone, Android, and macOS operating systems[8] and supports both English and Vietnamese. Cốc Cốc also has its own search engine service.[9]


The first version of the browser was presented under the brandname Cờ Rôm+ on 4 December 2012 (Cờ Rôm being the informal Vietnamese pronunciation of Chrome). At that time, the interface of Cốc Cốc was similar to that of Google Chrome, but the browser had already integrated two features: the ability to download files to multiple streams and the storage of media content[10]

Two months after the official release, the number of Cốc Cốc users in Vietnam surpassed Opera[11] and later Safari and Internet Explorer.[12]

On 2 April 2014, Cờ Rôm+ was officially re-branded as the Cốc Cốc browser to unify the company's brands under that name: Cốc Cốc Search Engine, Cốc Cốc browser and Nhà Nhà mobile app.[13]

In October 2017, Cốc Cốc reached more than 22 million users and ranked as the second most popular browser in Vietnam after Google Chrome.[14]


Cốc Cốc has a mechanism to perform reverse domain name resolution, allowing the bypassing of blocked websites (including Facebook) on DNS.[15][16] This feature debuted on 14 May 2013, in the first official release of the browser.[7]

Cốc Cốc is equipped with a system that automatically adds lingual tone to Vietnamese text. It allows the user to enter Vietnamese text without the need for applications like Unikey and Vietkey. When users type any text without tone, Cốc Cốc will suggest the most likely variants of tone arrangements, once processed on the Cốc Cốc server.[16]

Cốc Cốc incorporates an English-Vietnamese dictionary, assisting English learners or international newspaper subscribers from elementary to the advanced level. When users double click on any English word, a small box will appear on site, showing meaning and pronunciation of the word.[17]

Cốc Cốc is able to find media content (audio, video) on most streaming websites and save it to the computer for viewing or listening offline, by one click on an icon on the toolbar.[15] Except for several premium websites, all popular streaming websites, for example, YouTube and Dailymotion, are downloadable on the browser.[18]

Unlike Google Chrome, which removes and cancels all pending downloads when the browser is closed, Cốc Cốc saves and resumes partial downloads (assuming that the server hosting the file supports this feature).[8]

Market share[edit]

According to data published by StatCounter in October 2021, use of Cốc Cốc surpassed Firefox and, with a share of 12.82%, became the second most used browser in Vietnam after Google Chrome (also based on Chromium), at 70.9% (combined at 74.88%).[19] Also according to data published by StatCounter in October 2021, Cốc Cốc had overtaken Internet Explorer and Firefox to become one of the top browsers in Vietnam."[20]

User feedback and issues[edit]

In 2021 ex-CEO of Cốc Cốc confessed that at least from 2017 the company was engaged into selling advertising to illegal gambling websites and other activities suspected to have criminal nature.[21]


  1. ^ "Cốc Cốc Browser". web site. 2 December 2021. Retrieved 9 December 2021.
  2. ^ "Cốc Cốc Browser". web site. 12 December 2021. Retrieved 27 December 2021.
  3. ^ "Cốc Cốc Browser on the App Store". iTunes Store. 24 December 2021. Retrieved 27 December 2021.
  4. ^ "Cốc Cốc Browser for Android". Google Play Store. 25 December 2021. Retrieved 27 December 2021.
  5. ^ "Get Cốc Cốc Browser - Microsoft Store". Microsoft Store. 1 May 2021. Retrieved 9 May 2021.
  6. ^ Moed, Jonathan. "This Vietnamese Browser & Search Engine Is Daring Google To Step-Up Its Game". Forbes. Retrieved 12 February 2021.
  7. ^ a b "Cốc Cốc ra mắt trình duyệt Internet riêng cho thị trường Việt Nam". Retrieved 19 July 2013.
  8. ^ a b "Tính năng của Cờ Rôm+".
  9. ^ Anh-Minh, Do (13 February 2013). "CocCoc, Another Big Vietnamese Search Engine is Here". techinasia.com.
  10. ^ Đánh giá Cờ Rôm+ trình duyệt web "Made in Việt Nam"
  11. ^ "StatCounter Global Stats - Browser, OS, Search Engine including Mobile Usage Share".
  12. ^ "Top 5 browsers in Vietnam on Feb 2014". StatCounter. Retrieved 29 July 2013.
  13. ^ "Cờ Rôm+ trở thành trình duyệt Cốc Cốc".
  14. ^ Truong, Loc (31 October 2017). "Vietnamese search engine Coc Coc attracts 23 million users". Vietnam Insider. Retrieved 9 August 2022.
  15. ^ a b Do, Anh-Minh (16 May 2013). "CocCoc Releases Corom And Enters the Browser Wars in Vietnam". Tech in Asia. Retrieved 2 August 2013.
  16. ^ a b "Cốc Cốc: Lướt Facebook với Cờ Rôm+ không lo gặp "lỗi"". Retrieved 29 July 2013.
  17. ^ "Trình duyệt Cờ Rôm+, lướt web theo phong cách Việt". Archived from the original on 24 September 2013. Retrieved 20 February 2013.
  18. ^ Trình duyệt Cờ Rôm+: Lướt Facebook vi vu, tự thêm dấu tiếng việt
  19. ^ "StatCounter Global Stats - Browser, OS, Search Engine including Mobile Usage Share". Archived from the original on 2 February 2017. Retrieved 6 October 2021.
  20. ^ "Top 5 browsers in Vietnam on October 2021". StatCounter. Archived from the original on 2 February 2017. Retrieved 6 October 2021.
  21. ^ ""Confession of Cốc Cốc ex-CEO on voting about gambling"". Facebook. 24 June 2021.

External links[edit]