
Asterisk
FreeSWITCH
FusionPBX
Wazo.io
Kamailio
miniSIPServer
XiVO
FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).

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Website, pricing, platforms and company facts side by side.
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| Website | freepbx.org | opalstack.com |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
FreePBX One Year Follow up Review and The Phones We Use: Yealink YEA-W56P & Zoiper
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How often each product is chosen within a category, 0–100% relative to the other.


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When comparing freepbx and Opalstack, you can also consider the following products.

An open source telephony switching and private branch exchange service for Linux.
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FreeSWITCH is an open-source media application designed to support popular protools such as SIP and WebRTC and provides a platform to develop voice and video applications.
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Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under...
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Social & Communications and Development
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