GOnnect is an opinionated, simple, easy to use VoIP client, designed for Flatpak based installations. What is special about GOnnect is that is meant to be provisioned.
For that reason it has no configuration wizard or SIP settings dialog and requires a working configuration file in place. To assist you in getting started, there are a couple of prepared templates to choose from.
This is free and open source software.
Key Features
- Call forwarding.
- Conference calls with three parties.
- Busy state for supported sources.
- Configurable “busy on active call”.
- LDAP/CardDAV address sources.
- Configurable identities for outgoing calls.
- Configurable togglers (i.e. for call queues, CFNL, etc.).
- Upgrade call to Jitsi Meet session.
- Support for various hardware headsets (i.e. Yealink, Jabra).
- Support for various busylights.
- Custom audio device profiles or managed by your system.
- Stopping other audio sources on incoming calls.
- System Tray integration for most common functions / favorites / most frequent calls.
- GNOME Search-Provider support.
- KRunner search plugin (requires latest flatpak version).
- Desktop Actions / Autostart.
- Global Keyboard Shortcuts (if supported by your Desktop environment).
- Do not activate the screensaver when using the phone.
- Mime-Type registration for `tel:` / `sip:` URLs.
- Light/Dark mode.
Website: github.com/gonicus/gonnect
Support:
Developer: GONICUS GmbH
License: GNU General Public License v2.0

GOnnect is written in C++. Learn C++ with our recommended free books and free tutorials.
Related Software
| VoIP Software | |
|---|---|
| Jitsi | Innovative open source voice and video conferencing |
| Mumble | Voice chat application for groups |
| Jami | SIP-compatible softphone and SIP-based instant messenger |
| GNU Gatekeeper | Feature-rich project that implements an H.323 gatekeeper. |
| Fluxer | Instant messaging and VoIP platform |
| Kamailio | Build large platforms for VoIP and realtime communications |
| FreeSWITCH | Telephony platform for voice and chat driven products |
| Asterisk | Complete PBX system |
| Wire | Encrypted instant messaging client |
| Galene | Easy to deploy videoconference server |
| Linphone | Voice over IP softphone, SIP client and service |
| Janus | General purpose WebRTC server |
| Baresip | Modular SIP user-agent |
| OpenSIPS | Mature SIP server |
| GOnnect | Easy to use VoIP client |
| Calls | Make phone and SIP calls |
| Ekiga | VoIP and video conferencing application for GNOME |
| qTox | Chat, voice, video, and file transfer IM client |
| Empathy | Instant messaging and voice over IP client |
Read our verdict in the software roundup.
Explore our comprehensive directory of recommended free and open source software. Our carefully curated collection spans every major software category.This directory is part of our ongoing series of informative articles for Linux enthusiasts. It features hundreds of detailed reviews, along with open source alternatives to proprietary solutions from major corporations such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. You’ll also find interesting projects to try, hardware coverage, free programming books and tutorials, and much more. Discovered a useful open source Linux program that we haven’t covered yet? Let us know by completing this form. |

