Instant messaging (IM)

wikipedia:Instant messaging

• Slack (2013)
• Internet Relay Chat (IRC)
• Jitsi (2003)
• Mattermost (2015)
• Matrix (client: Riot)
• Rocket.Chat (at least 2016)
• Zulip (2012)
• Keybase (open-source client with proprietary server)
• Wire (Open Source - End to End Encrypted)
• Gitter (2014)
• Discord (2015)

Google trends

• https://trends.google.com/trends/explore?q=%2Fm%2F0zdp3l0,%2Fg%2F11cjpb9d52,%2Fg%2F11csb2gq0p,%2Fg%2F11ff53mf29

Free plans

• Microsoft Teams (March 2017)
• Chanty (2017)
• Fleep (2012)

Related terms

• Intercom (2011)

See also

• IM, Messenger, Slack, Mattermost, RocketChat, Gitter, Discord, Microsoft Teams, Skype, Amazon Chime, Zoom, Google Chat, AWS Chatbot, LiveChat, APNs, Arattai, Zulip, Chanty, Fleep, Spaces, Zoho Connect, QQ, WhatsApp, Cliq, iMessage