Internet & Communication · Reviewed
ICQ
An early consumer instant-messaging service recognized for contact lists, online presence and direct messages, originally developed by Mirabilis and later operated under several owners.
Overview
ICQ gave users a contact list showing who was available and a way to send short messages outside email's more formal workflow. Its identifiers, notifications and presence information made communication feel immediate. Later versions expanded the service with additional media and mobile capabilities.
The installed client was only one part of an operated messaging network. Contacts, account identity and message delivery depended on service infrastructure. This matters historically because the survival of client software does not by itself preserve a usable messaging community or its server-side behavior.
Key features
- Contact lists and presence
- Direct instant messages
- Account identifiers
- Notifications and availability controls
- Later mobile and media features
Historical significance
ICQ helped define everyday instant messaging through visible presence, contact lists and recognizable alerts. It brought a sense of ongoing social connection to the desktop beyond scheduled calls or email exchanges. Its closure also highlights the preservation challenge of networked social software whose identity depends on active users and infrastructure.
History and development
Mirabilis introduced ICQ in 1996. AOL acquired the company in 1998, adding the service to an expanding consumer internet business. Later ownership moved to the company then known as Mail.ru Group, with subsequent development under the VK group.
The product changed substantially as mobile messaging became more important. The original long-running ICQ service closed in June 2024. Its history therefore spans the early desktop contact-list model and the later competitive environment of smartphone-centered communication.