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Gammu is a cellular manager for mobile phones/modems. It contains libraries and functions for ringtones,logos,phonebook,SMS,etc. (used by external software), a command line version (with backup/restore) and SMS gateway (with MySQL and PostgreSQL supp
Kalkun is an open source web-based SMS (Short Message Service) manager.
It uses Gammu SMSD (part of gammu family) as SMS gateway engine to deliver and retrieve messages from your phone/modem.
Documentation is on the wiki: https://github.com/kalkun-sms/Kalkun/wiki
Development and source code can be found on github: https://github.com/kalkun-sms/Kalkun/
Elastix is a software-based PBX powered by 3CX and based on Debian. An open-standards solution, Elastix is an easy to install and manage UC system compatible with popular IP phones, gateways and SIP trunks.
Elastix is complete with unified communications features such as integrated WebRTC video conferencing, chat, presence and softphones and smartphone clients for Windows, Mac, iOS and Android.
Qodem is a a terminal emulator that resembles the BBS-era Qmodem. Includes phonebook, scrollback, capture, X/Y/Zmodem, Kermit, ANSI (+ music) / Avatar / VT102 / Linux emulation, Unicode, and keyboard macros. Connects over serial, ssh, telnet, rlogin.
Vodia PBX has included a complete suite of business telephony features for on-premise and cloud-based telephony deployments.
Sign up at https://vodia.com/en/register and receive your free Vodia license.
THUNDER!Box synchronisiert das Thunderbird-Adressbuch an einen FRITZ!Box DSL-Modem/Router. --- THUNDER!Box synchronizes the Thunderbird addressbook to the FRITZ!Box DSL-Modem/Router.
A˛Z is a simple and efficient web-based contact management software that runs on PHP and MySQL. You can use it to replace your phonebook or even use it as an office-wide phone directory. It is all yours to decide!