- python3-pil (pillow) for support of webp avatars
- gir1.2-avahi-0.6 for zeroconf on Linux or [pybonjour](https://dev.gajim.org/lovetox/pybonjour-python3) on Windows/macOS
- gir1.2-gspell-1 and hunspell-LANG where lang is your locale eg. en, fr etc
- gir1.2-secret-1 for GNOME Keyring or KDE support as password storage
- D-Bus running to have gajim-remote working
- gir1.2-farstream-0.2, gir1.2-gstreamer-1.0 gir1.2-gst-plugins-base-1.0, gstreamer1.0-plugins-ugly, gstreamer1.0-libav, and gstreamer1.0-gtk3 for audio and video calls
- gir1.2-gupnpigd-1.0 for better NAT traversing
- gir1.2-networkmanager-1.0 for network lose detection