PortSIP Softphone
PortSIP Softphone is a free softphone app for Windows, iOS, and Android, with browser calling and SIP support.
What PortSIP Softphone is
PortSIP Softphone is a free softphone app for Windows, iOS, and Android, with browser calling and SIP support. It is the legacy app for PortSIP PBX v16.x; the maker directs users of PBX v22.x to PortSIP ONE. The wider PortSIP PBX platform combines calls, messaging, and meetings, with call routing, SMS, WhatsApp, team messaging, contact center tools, and voice and video meetings. Contact center capabilities include skill-based routing, queue strategies, live wallboards, analytics, 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 synchronization. The PBX Free Edition costs nothing and supports up to three extensions and two simultaneous calls. Paid PBX licenses require a quote.
Good
- Free softphone downloads are listed for three platforms.
- Supports browser calling and SIP.
- PBX Free Edition allows three extensions.
- PBX platform includes calls, messaging, and meetings.
Watch out
- Softphone is the legacy app for PBX v16.x.
- PBX Free Edition allows only two simultaneous calls.
- Paid PBX license pricing requires a quote.
Who it suits
It suits users looking for a free softphone on Windows, iOS, or Android, particularly those using PortSIP PBX v16.x. Users of PBX v22.x are directed to PortSIP ONE instead.
Verdict
PortSIP Softphone offers a free calling client across desktop and mobile platforms, but its legacy status matters for PBX users. The PBX Free Edition has limits of three extensions and two simultaneous calls.
Plans and prices
From PortSIP Softphone's own pricing page, checked 5 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| PortSIP PBX Free Edition | Free | Up to 2 simultaneous calls · 3 extensions |
| PortSIP Softphone | Free | Legacy app supports PortSIP PBX v16.x · Windows, iOS and Android downloads listed |
| PortSIP PBX paid licenses | Priced on request | Based on extension users · 1:1 ratio of extensions to simultaneous calls · all features included · Quote required; perpetual or annual licenses |
The facts
Each one read from PortSIP Softphone's own pages, with the date it was checked.
What it does
- AI features
- PortSIP PBX describes AI-powered call and voicemail transcription, notes and summaries, and sentiment analysis for calls.checked 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.checked 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.checked 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.checked 5 Oct 2026
- Developer integrations
- PortSIP lists REST APIs, Pub/Sub, messaging APIs, webhooks, a calling SDK and call control APIs for custom integrations.checked 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.checked 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.checked 5 Oct 2026
- Microsoft 365 integration
- Microsoft 365 integration supports user provisioning, SSO in web and native apps, and syncing directory users and contacts.checked 5 Oct 2026
- Multi-tenant privacy
- The maker says each PBX tenant is isolated and cannot see other tenants’ data or settings.checked 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.checked 5 Oct 2026
- Scale
- The maker says a single deployment can support 50,000–100,000 simultaneous online users.checked 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.checked 5 Oct 2026
Alternatives to PortSIP Softphone
- 1
Siperb Mobile Softphone
Free planAndroidiOSWebAPI7.9From £2 a month - 2
Zoiper
Free planAndroidiOSLinuxmacOS7.3From €29.88 a year - 3
Bria Solo
Free planAndroidiOSmacOSWindows7.1From $35.40 a year - 4
SessionTalk Softphone
AndroidiOSWebmacOS7.0From $20 a month - 5
Phoner
AndroidiOSWeb6.9From $9.99 a month - 6
Aria
Free planAndroidiOSAPILinux6.8Free plan