Side by side
4PSA VoipNow vs OnSIP
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 AndroidiPhoneMac+2
OnSIP offers a free tier alongside paid calling and business phone features. The restriction on regular-number dialing for free SIP accounts is an important distinction when choosing a plan.
Visit OnSIPThe facts
| 4PSA VoipNow | OnSIP | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Linux, Self-hosted, Web | Android, iPhone, Mac, Web, Windows |
| Lowest paid plan | On your infrastructure: $145 a month | Unlimited: $18.95 a month |
| Plans published | 7 | 4 |
| Maker | Not published | OnSIP |
| Website | 4psa.com | onsip.com |
| On business phone systems | #11 of 174 | #8 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
OnSIP: what it does well
- Free plan supports up to 100 users.
- Free plan includes unlimited extensions.
- Integrations include Zendesk, HubSpot, and Odoo.
- Month-to-month contracts are available.
What to know first
- Free SIP accounts cannot dial regular phone numbers.
- Unlimited plan has a five-user minimum.
- Video conferences support up to five people.
Alternatives to 4PSA VoipNow Alternatives to OnSIP The whole list