ICQ version 10.0 on Linux (released 2016)
ICQ version 10.0 on Linux (released 2016)
Original author(s)Mirabilis
Initial releaseNovember 15, 1996; 22 years ago (1996-11-15), Israel
Stable release
10.0.12372 / September 12, 2018; 6 months ago (2018-09-12)
Written in
PlatformWindows, macOS, Android, iOS, Windows Phone, Linux, Symbian, Java ME, Web platform
TypeInstant messaging client
LicenseLinux version under icq.com

ICQ is a cross-platform instant messaging and VoIP client. The name ICQ derives from the English phrase "I Seek You".[1] Originally developed by the Israeli company Mirabilis in 1996, the client was bought by AOL in 1998, and then by Mail.Ru Group in 2010.

The ICQ client application and service were initially released in November 1996, freely available to download. ICQ was among the first stand-alone instant messenger (IM) — while real-time chat was not in itself new (Internet Relay Chat (IRC) being the most common platform at the time), the concept of a fully centralized service with individual user accounts focused on one-on-one conversations set the blueprint for later instant messaging services like AIM,[2] and its influence is seen in modern social media applications. ICQ would be the first widely adopted IM platform.[3]

At its peak around 2001, ICQ had more than 100 million accounts registered.[1] At the time of the Mail.Ru acquisition in 2010, there were around 42 million daily users.[4] Since 2013, ICQ has 11 million monthly users.[5]


  • ICQ features include offline user messaging, multi-user chats, free daily-limited SMS sending, resumable file transfers, greeting cards, multiplayer video games and a searchable user directory. Users can use emoticons while chatting with other users.
  • ICQ6 was launched on April 17, 2007, and offered a single communication platform that combines the various user options: instant messaging services, free SMS from ICQ to mobile, voice and video communication. The software's sounds were created by the Israeli psychedelic trance duo Infected Mushroom. Among the new additional features in ICQ6 are Quick IM, which allows users to send a short message without opening a conversation window, a "follow me" service directly to the user’s mobile, a multi-chat service and support for Zlango, the animated icons language.

Additional products

ICQ provides all users additional services and content products:

  1. ICQ TV—An online video magazine. The magazine broadcasts content for teens 24/7.
  2. ICQ SIM Card (together with United Mobile)—A SIM card that enables users traveling across Europe to use their cellular telephones while paying a discount price.
  3. ICQ Game Center—A games platform that enables the user to play with and/or against other users. Available by clicking a button in the contact list.
  4. ICQ2Go—A web instant messaging option for users who cannot download the program onto their computers or use it on the networks they are accessing (for various reasons, like security restrictions or firewalls).
  5. ICQ for Mac[6] (Beta)—Released in February 2010, a version of the client that was developed using the Adobe AIR platform, making it usable on additional operating systems which support the AIR runtime, such as Linux.[citation needed]

Also, users can choose and select their own avatars for their profile pages. In this way, they can protect their privacy.

Other Languages
Alemannisch: ICQ
العربية: آي سي كيو
azərbaycanca: ICQ
বাংলা: আইসিকিউ
башҡортса: ICQ
беларуская: ICQ
беларуская (тарашкевіца)‎: ICQ
български: ICQ
català: ICQ
čeština: ICQ
dansk: ICQ
Deutsch: ICQ
español: ICQ
Esperanto: ICQ
français: ICQ
galego: ICQ
한국어: ICQ
հայերեն: ICQ
hrvatski: ICQ
Bahasa Indonesia: ICQ
interlingua: ICQ
italiano: ICQ
עברית: ICQ
lietuvių: ICQ
lumbaart: ICQ
magyar: ICQ
Nederlands: ICQ
日本語: ICQ
norsk: ICQ
олык марий: ICQ
oʻzbekcha/ўзбекча: ICQ
polski: ICQ
português: ICQ
română: ICQ
русский: ICQ
shqip: ICQ
slovenčina: ICQ
slovenščina: ICQ
српски / srpski: ICQ
suomi: ICQ
svenska: ICQ
татарча/tatarça: ICQ
Türkçe: ICQ
українська: ICQ
Tiếng Việt: ICQ
粵語: ICQ
中文: ICQ