instant messaging client
software for sending or receiving chat messages
Quiet Internet Pager
third-party closed-source freeware multiprotocol IM client
Empathy
open source instant messaging and VoIP client
Miranda IM
Free instant messenger for Microsoft Windows
Apache Wave
software framework for real-time collaborative editing online
Spark
Open Source, cross-platform IM client optimized for businesses and organizations
Skype for Business Server
enterprise real-time communications server software
Myspace IM
discontinued instant messaging client for Myspace
TU Me
Instant messaging and Voice over IP app
Glide
instant message software
Google Chat
communication software developed by Google that provides direct messages and team chat rooms
Yahoo! Messenger
instant messenging protocol
Skype for Business
instant messaging client
Tinder
social network and dating platform
Hello
online social network
Microsoft Teams
team collaboration and videoconferencing application developed by Microsoft
Gitter
open source messaging software
Fire
instant messaging client
Pidgin
graphical multi-protocol instant messaging client
Line
instant messaging and social networking service
Burner
mobile application allowing users to create temporary phone numbers
Finch
command line instant messenger
Raya
Dating and networking app for iOS
BiP
instant messaging app by Turkcell
Messenger Kids
Instant messaging service and software application for kids below the age of 13
AOL Instant Messenger
instant messaging service
Gossip
instant messaging client
Trillian
instant messaging application
Hello
instant messaging application by Picasa
Messenger
instant messaging app developed by Meta Platforms
ChatON
global mobile communication service introduced by Samsung Electronics in September 2011
Hike
instant messaging app
Telegram
cross-platform instant messaging service
Slack
web-based instant messaging service
SOMA Messenger
instant messaging software
Discord
instant messaging and VoIP software
Stride
communication tool
Skype
former telecommunications software service
Psi
Instant messaging client
Windows Messenger
instant messaging client
WASTE
instant messaging client
Proteus
macOS instant messaging software
ChitChat
instant messaging client for Mac OS X
Fama IM
instant messaging
PowWow
Internet instant message and chat program
Signal
privacy-focused encrypted messaging app
Ricochet
anonymized free instant messaging client
Wire
instant messaging client