The best Free Asterisk 2021

Year 2021

PiPOS PBX - Pi Productive Office Station

Industrial Appliance (Load the firmware and go!)

Year 2017

PBXGratis y Libre V3

PBX ready and configured

Year 2016 (Many options from FreePBX)

- Official FreePBX (Sangoma)

Then, the start point:

* Installing FreePBX Official Distro

* Other Offline Information Manual for Dowload. IPBXControl Black and White Box Manual

This is an easy, very nice and powerfull implementation

* The SOHO Dream Machine: A Unified Communications Platform for Under $200

Hint: For all later distributions with Asterisk 13 and 16, PABXControl Asterisk Guardian is strongly committed to work, so you can have Mental Peace because everything is under your control with Ecosystem Asterisk Guardian.