Windows 98 Instant Messaging Clients

During the Windows 98 era, real-time internet communication expanded rapidly from niche chat rooms into mainstream everyday use. While third-party platforms like ICQ and AOL Instant Messenger dominated early desktop messaging, Microsoft officially entered the market in 1999 with the launch of MSN Messenger Service. This guide details the instant messaging clients introduced by Microsoft as well as the major third-party platforms supported on Windows 98.

MSN Messenger Service

The most significant instant messaging client introduced during the Windows 98 era was MSN Messenger Service, released by Microsoft on July 22, 1999. Designed to run natively on Windows 95, Windows 98, and Windows NT 4.0, it provided basic text-based chat and a contact list linked to Microsoft Hotmail accounts. MSN Messenger quickly became one of the dominant messaging platforms of the era, later evolving into Windows Live Messenger.

Microsoft NetMeeting

Windows 98 came pre-installed with Microsoft NetMeeting, a conferencing client that included instant text chat capabilities. While not a dedicated buddy-list instant messenger like its contemporaries, NetMeeting supported real-time text chat, audio and video calls, file transfers, and desktop sharing over local networks or the internet using IP addresses and directory servers.

Major Third-Party Clients Supported on Windows 98

In addition to Microsoft's native software, several third-party messaging clients were fully supported and widely used on Windows 98:

  • ICQ: Developed by Mirabilis and later acquired by AOL, ICQ was one of the earliest standalone instant messaging services and held massive market share among Windows 98 users. It identified users by numeric User Identification Numbers (UINs).
  • AOL Instant Messenger (AIM): Launched in 1997, AIM offered a standalone client for Windows 98 that popularized buddy lists, customizable profiles, and away messages.
  • Yahoo! Messenger: Originally released in 1998 as Yahoo! Pager, the application was rebranded as Yahoo! Messenger in 1999. It offered integrated chat, audio conferencing, and notifications for Yahoo! Mail users on Windows 98 systems.