ToolVitals

Telephony & PBX

Alternatives to FS PBX

Compare healthier or more active tools in the same use case using ToolVitals public evidence.

View FS PBX profileView Telephony & PBX leaderboard

Why compare

Signals behind this alternatives page

  • Maintenance and shipping signals are strong.
  • Health score: 85/100.
  • Shipping score: 98/100.

Switching guide

Best alternatives by need

Best overalldograh

Highest organic ToolVitals fit for this use case.

Healthier optionsdograh

Stronger current public-health signal than FS PBX.

Verified open/source-visibledograh, Kamailio, MikoPBX, Linphone

Useful when portability and inspectability matter.

License unknown, source-visible signalsFastAICC

Public source signals exist, but ToolVitals has not verified the license class.

Trust note: Sponsors and affiliate links are separate from rankings. ToolVitals does not let monetization change scores, risk labels, organic ordering, or evidence display.

Ranked alternatives

Best-fit telephony & pbx options

7 tools
02

Kamailio

Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalability

Active
Health85
Shipping86
Score89
Confidence99
Stars2.9k
ModeSource-visible project
View profileCompare with FS PBX
04

Linphone

Linphone is a free VoIP and video softphone based on the SIP protocol. Mirror of git://git.linphone.org/linphone-desktop.git

Warning
Health68
Shipping59
Score72
Confidence91
Stars500
ModeSource-visible project
View profileCompare with FS PBX
05

ICTFAX

Open source fax server software for inbound and outbound faxing with API integration.

Warning
Health47
Shipping49
Score61
Confidence95
ModeSource-visible project
View profileCompare with FS PBX