PortSIP Softphone

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What PortSIP Softphone is

PortSIP Softphone is a free calling app for Windows, iOS, and Android, with browser calling and SIP support. It is the legacy softphone for PortSIP PBX v16.x; users of PBX v22.x are directed to PortSIP ONE. The wider PortSIP communications offering brings calls, messaging, and meetings together, with call routing, SMS, WhatsApp, team messaging, contact center features, and voice and video meetings. Contact center capabilities include skill-based routing, queue strategies, live wallboards, analytics and reporting, real-time monitoring, and training tools. The maker also describes AI features for call and voicemail transcription, notes, summaries, and sentiment analysis. PBX deployments can run on customer infrastructure, Azure, AWS, or GCE, in a cloud, data center, or on premises using Docker. Microsoft 365 integration supports user provisioning, single sign-on in web and native apps, and directory and contact syncing. Developers can use REST APIs, Pub/Sub, messaging APIs, webhooks, a calling SDK, and call control APIs for custom integrations. The separate PBX Free Edition costs nothing and supports up to 3 extensions and 2 simultaneous calls.

Who it suits

The free softphone suits people using Windows, iOS, or Android who need a client for PortSIP PBX v16.x. Organizations evaluating the broader PBX platform may find its deployment, contact center, and integration options relevant.

What it does well

Free app for Windows, iOS, and Android
Browser calling and SIP support
PBX offers calls, messaging, and meetings
Microsoft 365 integration supports SSO and directory syncing

What to know first

Legacy app is for PortSIP PBX v16.x
PBX v22.x users are directed to PortSIP ONE
PBX Free Edition is limited to 3 extensions and 2 simultaneous calls

Limits

The PBX Free Edition supports up to 3 extensions and 2 simultaneous calls. Paid PBX licenses require a quote and are available as perpetual or annual licenses.

Plans

Plan	Billed and limits	Price
PortSIP PBX Free Edition	Up to 2 simultaneous calls · 3 extensions	Free
PortSIP Softphone	Legacy app supports PortSIP PBX v16.x · Windows, iOS and Android downloads listed	Free
PortSIP PBX paid licenses	Quote required; perpetual or annual licenses · Based on extension users · 1:1 ratio of extensions to simultaneous calls · all features included	On request

As portsip.com lists them, read 5 Oct 2026. The maker's own page has the final word.

Getting started

Open the PortSIP Softphone download page.
Choose the Windows, iOS, or Android download listed there.
Use browser calling or the app with SIP support.
For the PBX Free Edition, start with its 3 extensions and 2 simultaneous calls.
Request a quote for a paid PBX license if needed.

Verdict

PortSIP Softphone is a free option for the listed desktop and mobile platforms, but its legacy status matters: the maker directs PBX v22.x users to PortSIP ONE. The broader PBX platform has a free edition with limits of 3 extensions and 2 simultaneous calls.

Questions

How much does PortSIP Softphone cost?

The listed PortSIP Softphone plan costs nothing.

Which platforms are supported?

Downloads are listed for Windows, iOS, and Android. Browser calling is also supported.

Which PortSIP PBX version does the app support?

PortSIP Softphone is the legacy app for PortSIP PBX v16.x. Users of PBX v22.x are directed to PortSIP ONE.

What does the PBX Free Edition include?

It costs nothing and supports up to 3 extensions and 2 simultaneous calls.

How are paid PBX licenses priced?

A quote is required. Licenses are perpetual or annual and based on extension users.

Facts from PortSIP Softphone's own pages

AI features: PortSIP PBX describes AI-powered call and voicemail transcription, notes and summaries, and sentiment analysis for calls. · portsip.com, 5 Oct 2026
Communications features: PortSIP PBX lists calls, messaging and meetings on a single platform, along with call routing, SMS, WhatsApp, team messaging, contact center, and voice and video meetings. · portsip.com, 5 Oct 2026
Contact center: Contact center features include skill-based routing, queue strategies, live wallboards, analytics and reporting, real-time monitoring and training tools, and SMS and WhatsApp integration. · portsip.com, 5 Oct 2026
Deployment: PortSIP PBX can run on customer infrastructure, Azure, AWS or GCE, and can be deployed in the cloud, a data center or on premises using Docker. · portsip.com, 5 Oct 2026
Developer integrations: PortSIP lists REST APIs, Pub/Sub, messaging APIs, webhooks, a calling SDK and call control APIs for custom integrations. · portsip.com, 5 Oct 2026
Legacy status: PortSIP Softphone is the legacy app for PortSIP PBX v16.x; the page directs users of PBX v22.x to PortSIP ONE. · portsip.com, 5 Oct 2026
Licensing limits: Paid PBX licenses are based on extension count and include a 1:1 ratio of simultaneous calls; the pricing page says the free edition supports 3 extensions and 2 simultaneous calls. · portsip.com, 5 Oct 2026
Microsoft 365 integration: Microsoft 365 integration supports user provisioning, SSO in web and native apps, and syncing directory users and contacts. · portsip.com, 5 Oct 2026
Multi-tenant privacy: The maker says each PBX tenant is isolated and cannot see other tenants’ data or settings. · portsip.com, 5 Oct 2026
Product scope: PortSIP describes its communications offering as an all-in-one unified communications solution for service providers, enterprises and critical infrastructure sectors. · portsip.com, 5 Oct 2026
Scale: The maker says a single deployment can support 50,000–100,000 simultaneous online users. · portsip.com, 5 Oct 2026
Support: The site advertises 24 x 7 support and says all SDK packages include a one-year warranty with free updates and technical support. · portsip.com, 5 Oct 2026

Where PortSIP Softphone stands on Freedom251

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