TweetDeck-style X/Twitter client
Desktop client for Proton Meet
Customer service platform
Unofficial native application for Fastmail
Desktop email client for Gmail
Standalone IRCCloud desktop client
Instant messaging platform
Collaborative note-taking app
Messaging service that runs on Synology NAS
Desktop application for Instagram DMs
Enhances Gmail like a full-featured desktop office productivity app
Gmail client
Email productivity application
Instant messaging application designed for the XMPP network
IM client for Matrix
Desktop chat client for Slack (and Discord)
Unofficial Gmail desktop app
Audio video conferencing
Unofficial ProtonMail Desktop App
Multi-column Mastodon, Pleroma, and Friendica client for desktop
Client for the kMeet videoconferencing solution
XMPP client designed for experienced users
Private, p2p alternative to Slack and Discord built on Tor & IPFS
Client for Slack, Discord, Skype, Gmail, Twitter, Facebook, and more
Communications application with voice, video, chat, and web conferencing
Cloud-based telephone system