Side by side
4PSA VoipNow vs PortSIP PBX
Both stand on business phone systems. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APILinuxSelf-hosted+1
VoipNow covers PBX, contact-center, collaboration, integration, and deployment needs in one platform. The free edition is narrowly limited, while broader capacity and features use paid plans.
Visit 4PSA VoipNow Free plan AndroidAPIiPhone+4
Choose PortSIP PBX if you need a broad communications platform with a free edition and multiple deployment options. The free edition has firm extension and simultaneous-call caps, while license prices require a quote, so organizations planning beyond those limits should review licensing with PortSIP.
Visit PortSIP PBXThe facts
| 4PSA VoipNow | PortSIP PBX | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Linux, Self-hosted, Web | Android, API, iPhone, Linux, Self-hosted, Web, Windows |
| Lowest paid plan | On your infrastructure: $145 a month | Free or on request |
| Plans published | 7 | 5 |
| Maker | Not published | Not published |
| Website | 4psa.com | portsip.com |
| On business phone systems | #11 of 174 | #3 of 174 |
4PSA VoipNow: what it does well
- Multitenant permissions and shared-resource controls
- Voice, video, messaging, fax, and conferencing
- IVR, queues, agents, and supervisor monitoring
- APIs for automation and CRM integration
- Multiple self-hosted and cloud deployment options
What to know first
- Free edition limited to ten extensions
- Advanced features require a license
- Paid plans start at 145.00 USD monthly
- Some listed perpetual-license prices are unavailable
PortSIP PBX: what it does well
- Free Edition includes all features.
- Custom call routing and an auto attendant are included.
- Contact center tools include skill-based routing and live wallboards.
- Deploy on premises, in a data center, or on major cloud platforms.
- Microsoft 365 integration includes provisioning, SSO, and contact synchronization.
What to know first
- Free Edition is limited to 3 extensions and 2 simultaneous calls.
- Licensed Edition prices are available by quote only.
- Linux PBX installation uses Docker and lists Debian and Ubuntu.
Alternatives to 4PSA VoipNow Alternatives to PortSIP PBX The whole list