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Free FusionPBX alternatives: 3 apps ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rank

3 of the 5 FusionPBX alternatives we track can be used for free (free, open source, or with a free plan). Asterisk, FreeSWITCH and FreePBX rank highest, with facts last verified Nov 8, 2026.

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
1Asterisk logoAsteriskOpen source—NoLinux, Self-hosted5 of 566.5
2FreeSWITCH logoFreeSWITCHOpen source—NoLinux, Self-hosted5 of 561.8
3FreePBX logoFreePBXOpen source—NoSelf-hosted, Web3 of 340.0
  1. Asterisk logo

    1. AsteriskTop pick

    Best for: Telecom engineers and developers building a custom or self-hosted PBX on their own Linux servers.

    Open sourceLinux, Self-hosted

    66.5

    score / 100

    Why switch from FusionPBX

    The other major open-source engine, usually run with FreePBX for a similar web-managed PBX.

    Pros

    • Free and open source with no per-extension licence fees
    • Very flexible dialplan plus AMI, AGI and ARI interfaces for custom call apps
    • Works with SIP trunks, IP phones and analogue or digital phone lines
    • Large community and long track record

    Cons

    • No built-in web interface; configuration is text files unless you add FreePBX or similar
    • Steep learning curve around SIP, NAT and dialplan logic
    • Officially tested only on a handful of Linux distributions
    Visit Asterisk Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Asterisk a good FusionPBX alternative?

    Verified facts

    5 of 5 verified
    License
    GPL version 2 (commercial licences available)
    Checked Nov 8, 2026docs.asterisk.org(opens source in a new tab)
    Supported platforms
    x86 Linux: CentOS, RHEL, Fedora, Ubuntu, Debian
    Checked Nov 8, 2026docs.asterisk.org(opens source in a new tab)
    APIs
    AMI, AGI and ARI
    Checked Nov 8, 2026docs.asterisk.org(opens source in a new tab)
    Uses
    IP PBX, VoIP gateways, conferencing
    Checked Nov 8, 2026docs.asterisk.org(opens source in a new tab)
    Owner
    Digium (formerly Linux Support Services)
    Checked Nov 8, 2026docs.asterisk.org(opens source in a new tab)
  2. FreeSWITCH logo

    2. FreeSWITCH

    Best for: Developers and providers building high-volume voice, conferencing or contact-centre platforms.

    Open sourceLinux, Self-hosted

    61.8

    score / 100

    Why switch from FusionPBX

    Work with the underlying engine directly when you need custom call logic beyond the web UI.

    Pros

    • Handles large call volumes and multi-tenant setups well
    • Built-in WebRTC, conferencing and media transcoding
    • Programmable through Event Socket and embedded scripting

    Cons

    • Package downloads require signing up for a SignalWire account
    • No office-style admin UI out of the box; needs a front end like FusionPBX
    • XML configuration and dialplan take time to learn
    Visit FreeSWITCH Details and reviews
    How this score is calculated
    Editorial fit ×0.377
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is FreeSWITCH a good FusionPBX alternative?

    Verified facts

    5 of 5 verified
    First released
    2006
    Checked Nov 8, 2026signalwire.com(opens source in a new tab)
    Maintainer
    SignalWire
    Checked Nov 8, 2026signalwire.com(opens source in a new tab)
    Download requirement
    Free SignalWire account
    Checked Nov 8, 2026signalwire.com(opens source in a new tab)
    Editions
    Open source and commercial Enterprise
    Checked Nov 8, 2026developer.signalwire.com(opens source in a new tab)
    WebRTC
    Yes
    Checked Nov 8, 2026developer.signalwire.com(opens source in a new tab)
  3. FreePBX logo

    3. FreePBX

    Best for: IT teams and VoIP resellers who want a free, self-hosted Asterisk PBX managed from a browser

    Open sourceSelf-hosted, Web

    40.0

    score / 100

    Why switch from FusionPBX

    Widely used open-source web GUI for Asterisk with a large module ecosystem and community.

    Pros

    • Free, open-source GUI that hides most of Asterisk's configuration files
    • Modular, with a large community forum and long track record
    • Commercial modules and support available from Sangoma if needed

    Cons

    • Needs telephony and Linux knowledge to set up and keep secure
    • Some useful features, such as endpoint manager, are paid commercial modules
    • Upgrades between major versions can break modules
    Visit FreePBX Details and reviews
    How this score is calculated
    Editorial fit ×0.312
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is FreePBX a good FusionPBX alternative?

    Verified facts

    3 of 3 verified
    What it is
    Open-source GUI for Asterisk PBX
    Checked Nov 8, 2026community.freepbx.org(opens source in a new tab)
    License
    GPL-3.0
    Checked Nov 8, 2026github.com(opens source in a new tab)
    Installation
    FreePBX 17 install script
    Checked Nov 8, 2026github.com(opens source in a new tab)