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Instead of PortSIP PBX

PortSIP PBX alternatives

PortSIP PBX is built for service providers and MVNOs that need Cloud PBX, UCaaS, CPaaS, and CCaaS capabilities together. It combines custom call routing with SMS, WhatsApp, team messaging, contact-center features, and voice and video meetings. Organizations can deploy it in their data center, on premises, or on Azure, AWS, and Google Cloud using Docker. Android, iOS, Linux, web, and Windows support covers major endpoints. Its free edition includes all features for three extensions and two simultaneous calls, while paid editions use quote-based, extension licensing.

  1. 1

    Microsoft Teams

    by Microsoft Teams
    Free plan AndroidiPhoneLinux+3

    Microsoft 365 collaboration and large team messaging — Microsoft Teams emphasizes channels, guest access, unlimited message history, and Microsoft 365 integrations rather than PortSIP PBX’s PBX and contact-center stack.

    7.7 Free plan Visit site
  2. 2

    3CX

    by 3CX
    Free plan WebWindowsLinux+3

    Larger free PBX deployments with advanced routing — 3CX includes 40 users, advanced call routing, and macOS support, while PortSIP PBX’s free edition covers three extensions.

    7.7 Free plan · paid from $300/yr Visit site
  3. 3

    VitalPBX

    by VitalPBX
    Free plan AndroidAPIExtension+6

    Linux-based, Asterisk-powered business phone systems — VitalPBX is a Linux-based phone system built on Asterisk, while PortSIP PBX targets multi-tenant service-provider communications.

    7.5 Free plan · paid from $100/mo Visit site
  4. 4

    Zadarma

    by Zadarma
    Free plan WebWindowsMac+2

    Small teams needing numbers and a low annual price — Zadarma includes 10 users and a seven-day trial, compared with PortSIP PBX’s three-extension free edition and quote-based paid licenses.

    7.5 Free plan · paid from $39/mo (annual) · 7-day trial Visit site
  5. 5

    Freshcaller

    Free plan AndroidiPhoneWeb

    Cloud contact centers with international phone numbers — Freshcaller is a cloud contact center with BYOC, numbers from over 90 countries, call intelligence, and advanced inbound routing.

    7.4 Free plan · paid from $15/user/mo (annual) · 14-day trial Visit site
  6. 6

    OnSIP

    by OnSIP
    Free plan AndroidiPhoneMac+2

    Small teams wanting five included users and a trial — OnSIP offers five included users and a 30-day trial, while PortSIP PBX’s free edition includes three extensions and quote-based paid plans.

    7.4 Free plan · paid from $18.95/user/mo · 30-day trial Visit site
  7. 7

    Talkroute

    Free trial AndroidiPhoneLinux+3

    Virtual phone service with unlimited U.S. and Canada calling — Talkroute is a paid virtual phone system with unlimited U.S. and Canada minutes, while PortSIP PBX offers a free edition and broader communications platform.

    From $19/mo · 7-day trial Visit site
  8. 8

    FreePBX

    Free plan AndroidiPhoneLinux+2
    7.5 Free plan Visit site
  9. 9

    CallHippo

    Free plan AndroidExtensioniPhone+3
    7.4 From $18/user/mo (annual) · 10-day trial Visit site
  10. 10

    MyOperator

    by MyOperator
    Free plan AndroidAPIExtension+2
    7.4 From ₹5,000/mo (annual) Visit site
  11. 11

    4PSA VoipNow

    Free plan APILinuxSelf-hosted+1
    7.3 Free plan · 30-day trial Visit site
  12. 12

    Xorcom CompletePBX

    by Xorcom CompletePBX
    Free plan AndroidiPhoneLinux+2
    7.3 Pricing on request Visit site
  13. 13

    Zoho Voice

    by Zoho Voice
    Free plan AndroidAPIExtension+5
    7.3 Free plan · paid from $34/user/mo (annual) · 15-day trial Visit site
  14. 14

    Voxbi

    by Voxbi
    Free plan AndroidAPIiPhone+3
    7.3 Free plan · paid from €1.20/user/mo · 14-day trial Visit site
  15. 15

    Issabel

    by Issabel
    Free plan AndroidAPILinux+2
    7.3 Free plan · paid from $8.33/mo Visit site
  16. 16

    Sonetel

    by Sonetel
    Free plan AndroidAPIiPhone+4
    7.3 Free plan · paid from $9.95/user/mo (annual) Visit site
  17. 17

    Voxcloud

    by Voxcloud
    Free plan AndroidiPhoneWindows
    7.2 Free plan · paid from £5/mo · 14-day trial Visit site
  18. 18

    sipXcom

    Free plan APILinuxSelf-hosted
    7.2 Open source Visit site
  19. 19

    FusionPBX

    Free plan APILinuxSelf-hosted+1
    7.2 Free plan Visit site
  20. 20

    VoIP Business Enterprise

    Free plan AndroidExtensioniPhone+3
    7.2 Free plan Visit site
  21. 21

    Incredible PBX

    Free plan LinuxMacSelf-hosted+2
    7.2 Free plan Visit site
  22. 22

    MikoPBX

    Free plan APILinuxSelf-hosted+1
    7.1 Free plan Visit site
  23. 23

    Wazo Platform

    by Wazo Platform
    Free plan AndroidAPIiPhone+3
    7.0 Open source Visit site
  24. 24

    Palephone

    Free plan AndroidAPILinux+3
    7.0 Free plan Visit site
  25. 25

    Phonebooth

    Free plan AndroidiPhoneMac+2
    7.0 Free plan · paid from $20/user/mo Visit site

Readers may look elsewhere when three extensions are insufficient, macOS support is required, or quote-based licensing complicates budgeting. Compare each option’s collaboration tools, user allowance, business-number support, routing, voicemail transcription, and contact-center scope. Deployment preference also matters: PortSIP PBX supports self-hosted and cloud environments, while some alternatives focus on web or cloud delivery. A free plan, trial period, or stated per-user price can outweigh PortSIP PBX’s broader service-provider orientation for smaller teams. Check endpoint compatibility and the communications features your organization actually needs before switching.

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