A majority of the features, quality and stability of Cốc Cốc are remarked as similar to Google Chrome. The significance is that Cốc Cốc contains functionality that is useful to Vietnamese users: automatic typing aid, faster downloads, bypassing DNS blocking, ability to download audio and video from popular sites, integrated English-Vietnamese dictionary and spell-checking. 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.
The first version of the browser was presented under the brandname Cờ Rôm+ on 4/12/2012. 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
The browser was officially submitted five months later May 14, 2013  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 and supports English and Vietnamese.
Cốc Cốc is among the 5 most popular browsers in Vietnam, according to data from StatCounter 
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.
On September 2014, Cốc Cốc surpassed Firefox and ranked 2 in Top popular Browsers in Vietnam, just after Chrome
Cốc Cốc has a mechanism to reserve domain name resolution, allowing bypassing blocked websites (including Facebook) on DNS. This feature debuts on May 14, 2013, in the first official release of the browser
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. 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. 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.
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.
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.
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. Except for several premium websites, all popular streaming websites, for example, YouTube and Dailymotion, are downloadable on the browser.
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. At present, it has not yet provided option to increase/decrease downloading speed.
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).
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.