|Initial release||14 May 2013|
|Engine||Chromium open source code|
|Available in||Vietnamese, English|
|Type||Web browser, mobile browser|
Cốc Cốc browser (Vietnamese: [kə̌wkp kə̌wkp]; meaning "knock knock" and previously Cờ Rôm+ Vietnamese: [kə̀ː rōm]; lit. 'Chrome+') is a freeware web browser focused on the Vietnamese market, developed by Vietnamese company Cốc Cốc and based on Chromium open source code. Cốc Cốc is available for Windows, Windows Phone, Android, and macOS operating systems and supports both English and Vietnamese. Cốc Cốc also has its own search engine service.
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
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.
Cốc Cốc has a mechanism to perform reverse domain name resolution, allowing the bypassing of blocked websites (including Facebook) on DNS. This feature debuted on 14 May 2013, in the first official release of the browser.
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.
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.
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. Except for several premium websites, all popular streaming websites, for example, YouTube and Dailymotion, are downloadable on the browser.
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).
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%). 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."
User feedback and issues
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.
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- "StatCounter Global Stats - Browser, OS, Search Engine including Mobile Usage Share". Archived from the original on 2 February 2017. Retrieved 6 October 2021.
- "Top 5 browsers in Vietnam on October 2021". StatCounter. Archived from the original on 2 February 2017. Retrieved 6 October 2021.
- ""Confession of Cốc Cốc ex-CEO on voting about gambling"". Facebook. 24 June 2021.