IM is the abbreviation of English InstantMessage, namely instant messaging software.
Instant messaging software is software that realizes online chat and communication through instant messaging technology. At present, there are two forms of architecture. One is CS architecture, which takes the form of client and server. Users need to download and install client software during use. Typical representatives are: WeChat, QQ, Baidu Hi, Skype, Gtalk, Universal Communication, MSN, etc.
Instant messaging takes less time than sending emails and is more convenient than making phone calls. It is the most convenient way of communication in the Internet age.
The earliest instant messaging software is ICQ, which is the homonym of English Iseekyou. Four Israeli youths founded Bizarre Company in July. 1996 and 10 released the original version of ICQ in October, 165438, and 850,000 users registered to use it within half a year.