The net-im category contains instant messaging software.
| ayttm | A multi-protocol instant messaging client |
|---|---|
| bitlbee | irc to IM gateway that support multiple IM protocols |
| bitlbee-facebook | Facebook protocol plugin for BitlBee |
| bitlbee-steam | Steam protocol plugin for BitlBee |
| centerim | CenterIM is a ncurses ICQ/Yahoo!/AIM/IRC/MSN/Jabber/GaduGadu/RSS/LiveJournal Client |
| choqok | Free/Open Source micro-blogging client by KDE |
| climm | ICQ text-mode client with many features |
| coccinella | Jabber Client With a Built-in Whiteboard and VoIP (jingle) |
| corebird | Native GTK+3 Twitter client |
| coturn | coturn TURN server project |
| cpop | GTK+ network popup message client. Compatible with the jpop protocol |
| dianara | Qt-based client for the pump.io distributed social network |
| dino | Modern Jabber/XMPP Client using GTK+/Vala |
| discord-bin | All-in-one voice and text chat for gamers |
| ejabberd | Robust, scalable and extensible XMPP server |
| ekg2 | Text-based, multi-protocol instant messenger |
| empathy | Telepathy instant messaging and video/audio call client for GNOME |
| err | Multiprotocol chatbot designed to be easily deployable and maintainable |
| gajim | Jabber client written in PyGTK |
| gg-transport | Gadu-Gadu transport for Jabber |
| gitter-bin | Chat and network platform |
| jabber-base | Jabber servers and transports layout package |
| kadu | An open source Gadu-Gadu and Jabber/XMPP protocol Instant Messenger client |
| kouchat | KouChat is a simple serverless chat client for local area networks |
| libcommuni | A cross-platform IRC framework written with Qt |
| librvp | An RVP (Microsoft Exchange Instant Messaging) plugin for Pidgin |
| mattermost-desktop-bin | Mattermost Desktop application |
| mcabber | A small Jabber console client with various features, like MUC, SSL, PGP |
| minbif | IRC gateway to IM networks |
| openfire | Openfire (formerly wildfire) real time collaboration (RTC) server |
| openmittsu | An open source chat client for Threema-style end-to-end encrypted chat networks |
| pidgin | GTK Instant Messenger client |
| poezio | Console XMPP client that looks like most famous IRC clients |
| prosody | Prosody is a flexible communications server for Jabber/XMPP written in Lua |
| psi | Qt XMPP client |
| purple-events | Allows a fine-grained control over libpurple events |
| pyicq-t | Python based jabber transport for ICQ |
| qtox | Most feature-rich GUI for net-libs/tox using Qt5 |
| ricochet | Privacy-focused instant messaging through Tor hidden services |
| sendxmpp | A perl-script to send xmpp (jabber), similar to what mail(1) does for mail |
| signal-desktop-bin | Allows you to send and receive messages of Signal Messenger on your computer |
| silc-toolkit | SDK for the SILC protocol |
| skypeforlinux | Instant messaging client, with support for audio and video |
| slack-bin | Team collaboration tool |
| spectrum2 | An open source instant messaging transport |
| swift | An elegant, secure, adaptable and intuitive XMPP Client |
| telegram-desktop-bin | Official desktop client for Telegram (binary package) |
| telepathy-connection-managers | Meta-package for Telepathy Connection Managers |
| telepathy-logger | Daemon that centralizes the communication logging within the Telepathy framework |
| telepathy-mission-control | An account manager and channel dispatcher for the Telepathy framework |
| tkabber | A jabber client written in Tcl/Tk |
| toxic | A curses-based client for Tox |
| transwhat | A WhatsApp XMPP Gateway based on Spectrum 2 and Yowsup 2 |
| turses | Command line twitter client |
| vacuum | Qt Crossplatform Jabber client |
| yowsup | A library that enables you to build applications which use the WhatsApp service |
| ysm | A console ICQ client supporting versions 7/8 |