Beeper
Automattic
Single inbox that bridges WhatsApp, Telegram, Signal, Slack and other networks into one desktop chat list.
Windows · macOS · Linux
No known warnings · checked 23 Oct 2026
Betterbird
Betterbird contributors
FREEMPL-2.0
Thunderbird fork that ships extra fixes and features which have not been merged into the upstream release.
Links go to the official site. SoftHarbor hosts no downloads.
At a glance
- Developer
- Betterbird contributors
- Platforms
- Windows · macOS · Linux
- License
- MPL-2.0
- Tags
- email · thunderbird-fork · patches · imap
- Security
- No known warnings · checked 23 Oct 2026 · View scan
- Added
- 28 Jul 2026
More in Communication
FREE
Claws Mail
The Claws Mail team
Lightweight GTK email client that stores mail as plain files and adds features through a large plugin set.
GPL-3.0-or-laterWindows · Linux
No known warnings · checked 23 Oct 2026
Delta Chat
Delta Chat contributors
Chat app that sends messages over ordinary email accounts, encrypting them end to end where both sides support it.
GPL-3.0-or-laterWindows · macOS · Linux
No known warnings · checked 23 Oct 2026
Discord
Discord Inc.
Voice, video and text chat organised into servers and channels, with persistent rooms that stay open between sessions.
Windows · macOS · Linux
No known warnings · checked 23 Oct 2026