- [Tapir](http://www.sip3.io/) - Troubleshooting and real-time monitoring of VoIP-based systems. ([Source Code](https://github.com/sip3io/tapir)) `Apache-2.0``Java/Kotlin`
- [Wazo](http://wazo.community/) - Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API. ([Source Code](https://github.com/wazo-pbx)) `GPL-3.0``Python/PHP`
- [Wazo](http://wazo-platform.org/) - Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API. ([Source Code](https://github.com/wazo-platform)) `GPL-3.0``Python`