Cốc Cốc

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Cốc Cốc
Cốc Cốc browser icon since 02 April 2014
Developer(s) Cốc Cốc
Initial release May 14, 2013 (2013-05-14)
Stable release Version 31.0.1650.64
Development status Active
Written in C++, assembly, Python, JavaScript, Java
Operating system Windows, OS X
Engine Chromium open source code
Available in Vietnamese, English
Type Web browser
License Freeware
Website coccoc.com

Cốc Cốc browser (previously Cờ Rôm+) is a freeware web browser focused on the Vietnamese market, developed by Vietnamese company Cốc Cốc based on Chromium open source code,[1] which is the same platform used by Google Chrome, Opera, Comodo Dragon.

According to data published by StatCounter in February 2014, Cốc Cốc has overcome Internet Explorer to become one of the top 3 most popular browsers in Vietnam.[2]

According to data published by comScore in September 2014, Cốc Cốc also surpassed Firefox and became the second most used browser in Vietnam just after Chrome.[3][better source needed]


A majority of the features, quality and stability of Cốc Cốc are remarked as similar to Google Chrome.[4] The significance is that Cốc Cốc contains functionality that is useful to Vietnamese users:[5] automatic typing aid, faster downloads, bypassing DNS blocking, ability to download audio and video from popular sites, integrated English-Vietnamese dictionary and spell-checking.[6][7] According to Vn Review, a software technical review website, these tailored features add more value that put Cốc Cốc on the map and differentiate Cốc Cốc from other Chromium-based browsers.[8]


  • The first version of the browser was presented under the brandname Cờ Rôm+ on 4/12/2012.[9] At that time, the interface of Cốc Cốc was similar to that of Google Chrome, but the browser had already integrated 2 features: the ability to download files to multiple streams and storage of media content[9]
  • The browser was officially submitted five months later May 14, 2013 [1] with two new features introduced: automatic typing aid and bypassing DNS blocking. To date, the developer group has published 6 additional features.
  • Currently Cốc Cốc is available for Windows and OS X[7][10] and supports English and Vietnamese.[11]
  • 2 months after official release, the number of Cốc Cốc users surpassed Opera [12] and later outperformed Safari and Internet Explorer [13]
  • Cốc Cốc is among the 5 most popular browsers in Vietnam, according to data from StatCounter [14]
  • On 2 April 2014, Cờ Rôm+ was officially re-branded into Cốc Cốc browser, with new browser icon released. This move is to unify company's brands under the name Cốc Cốc: Cốc Cốc Search Engine, Cốc Cốc browser and Nhà Nhà mobile app.[15]
  • On September 2014, Cốc Cốc surpassed Firefox and ranked 2 in Top popular Browsers in Vietnam, just after Chrome[3]


  • Cốc Cốc has a mechanism to reserve domain name resolution, allowing bypassing blocked websites (including Facebook) on DNS.[6][8] This feature debuts on May 14, 2013, in the first official release of the browser[1]
  • Cốc Cốc is equipped with a system that automatically analyzes to add lingual tone to Vietnamese text. It allows user to enter Vietnamese text without need of applications like Unikey and Vietkey.[16] When users type any text without tone, Cốc Cốc will suggest the most likely variants of arrangement of tones after processed on Cốc Cốc server.[17] Developers say that addition of tones increases the typing speed up to 50% among regular users (those who cannot fluently type with 10 fingers) and 20% among advanced users.[1][8]
  • To further support Vietnamese language, Cốc Cốc automatically detects spelling mistakes, underlining and suggesting corrections with 94% accuracy. According to experiments, Cốc Cốc outperforms Google Chrome's spell-checker in 97 cases out of 100. The developer group estimates that this feature saves users up to 4–10 days per year to type and review documents.[18]
  • Cốc Cốc incorporates English-Vietnamese dictionary, assisting English learners or international newspapers' subscribers from elementary to advanced level. When users double click into any English word, a small box will appear on site, showing meaning and pronunciation of the word.[19]
  • Cốc Cốc is able to find media content (audio, video) on most streaming websites and save it to computer for viewing or listening offline, by one click on an icon on toolbar.[6] Except for several premium websites, all popular streaming websites, for example, YouTube and Dailymotion, are downloadable on the browser.[20]
  • To accelerate download, Cốc Cốc downloads files to multiple streams, which under certain conditions can increase download speeds up to eight times. In this case, the actual acceleration depends on the bandwidth of the Internet, and the speed at which the server sends files.[6] At present, it has not yet provided option to increase/decrease downloading speed.[21]
  • Unlike Google Chrome and most other browsers based on Chromium, which removes and cancels all pending downloads when the browser is closed, Cốc Cốc is able to save and renew download process (assuming that the server hosting the file supports this feature).[7]

User feedback and issues[edit]

  • DNS bypassing feature gets huge traction from the community. Users feedback on this feature as the most practical one regarding unstable access to Facebook in Vietnam, since it is much faster and more convenient than conventional addition of software like Hotspot Shield or Ultrasurf, which usually brings some side effects like Internet connection slowdown or third party advertising.
  • Tone-addition system for Vietnamese text shares the database of Cốc Cốc Search Engine, another of product of the company Cốc Cốc, which is known as the largest database of websites in Vietnamese. The system analyzes language used on websites to suggest the most likely variants of tones for any Vietnamese text inserted in the browser. This dynamic principle allows frequent update of newly coined terms in order not to be outdated on the Internet. However this feature seems unable to change users' typing habit. The feature is optional and users can opt out, either only on some specific websites or completely on browser.
  • Users highly welcome free and high speed media download. However finding and downloading media content from every websites is somewhat controversial regarding copyright issues that might raise in the future. The counter argument is that, since many add-ons for Firefox with similar function are still considered lawful, there is no solid reason to oppose this feature.
  • Using multi thread download similar to Internet Download Manager, the browser is supposed to download at just the same speed as Internet Download Manager, however there are reports of cases where it failed to perform up to expectation, because the actual acceleration depends on the bandwidth of the Internet, and the speed at which the server sends files.


  1. ^ a b c d "Cốc Cốc ra mắt trình duyệt Internet riêng cho thị trường Việt Nam". Retrieved 2013-07-19. 
  2. ^ "Top 5 browsers in Vietnam on July 2013". StatCounter. Retrieved 20 Feb 2014. 
  3. ^ a b http://ictnews.vn/internet/vi-sao-tan-binh-coc-coc-co-the-vuot-mat-cac-ong-lon-123266.ict
  4. ^ "Cốc Cốc ra mắt trình duyệt Internet riêng cho Việt Nam". Retrieved 29 July 2013. 
  5. ^ Trình duyệt Cờ Rôm+ của Cốc Cốc: Dễ truy cập Facebook, download nhanh như IDM
  6. ^ a b c d Do, Anh-Minh (16 May 2013). "CocCoc Releases Corom And Enters the Browser Wars in Vietnam". Tech in Asia. Retrieved 2 August 2013. 
  7. ^ a b c "Tính năng của Cờ Rôm+". 
  8. ^ a b c "Cốc Cốc: Lướt Facebook với Cờ Rôm+ không lo gặp "lỗi"". Retrieved 29 July 2013. 
  9. ^ a b Đánh giá Cờ Rôm+ trình duyệt web "Made in Việt Nam"
  10. ^ "Trình duyệt Cốc Cốc". Retrieved 2015-03-30. 
  11. ^ Cờ Rôm+, trình duyệt Việt Nam của Cốc Cốc
  12. ^ Top 5 browsers in Vietnam on August 2013
  13. ^ "Top 5 browsers in Vietnam on Feb 2014". StatCounter. Retrieved 29 July 2013. 
  14. ^ "Top 5 browsers in Vietnam on July 2013". StatCounter. Retrieved 29 July 2013. 
  15. ^ "Cờ Rôm+ trở thành trình duyệt Cốc Cốc". 
  16. ^ Chủ đề thảo luận: Cờ Rôm+
  17. ^ Cốc Cốc: Lướt Facebook với Cờ Rôm+ không lo gặp "lỗi"
  18. ^ "Lần đầu tiên Việt Nam ra mắt công cụ kiểm tra chính tả trên internet". Retrieved 2013-02-20. 
  19. ^ "Trình duyệt Cờ Rôm+, lướt web theo phong cách Việt". Retrieved 2013-02-20. 
  20. ^ Trình duyệt Cờ Rôm+: Lướt Facebook vi vu, tự thêm dấu tiếng việt
  21. ^ Công cụ tìm kiếm Việt Cốc Cốc "so găng" cùng đại gia Google

External links[edit]