Issabel
Issabel: A flexible open-source PBX with voice, contact-center, and omnichannel options. Ranked #90 of 166 in Business Phone Systems by our editors (3.0/10); pricing: Free plan; best for open-source teams needing omnichannel PBX.
At a glance
- Editor score3.0 / 10
- PricingFree plan
- Best forOpen-source teams needing omnichannel PBX
- Free planYes
- Paid from$8.33/mo
- Founded2017 · Coral Springs, Florida, USA
- Facts checked21 Sep 2026
Where it wins
- Free open-source core with self-hosted deployment options
- Configurable IVR, routing, queues, Webphone, recording, and reporting
- REST APIs plus WhatsApp, Telegram, WebChat, and SMS support
Where it doesn't
- Paid Contact Center licensing starts at $29 per agent monthly
- Cloud Contact Center requires at least 5 agents
- On-premise or private-cloud deployment requires at least 10 agents
Our verdict on Issabel
Issabel is an open-source VoIP communications platform and IP PBX for businesses, service providers, and contact centers. It brings together IP telephony, unified communications, call routing, interactive voice response, queues, automatic call distribution, recording, reporting, Webphone access, and configurable administration through a web interface. Teams can deploy the core platform on their own infrastructure, while the broader product line includes cloud and licensed contact-center services. Its strongest fit is for organizations that want control over PBX configuration and the option to extend the system through APIs, add-ons, and multi-tenant deployment.
Pricing depends on which part of the platform a team adopts. The core Issabel PBX is free and open source. The official Contact Center module lists a Voice Agent License at $29 per agent per month, billed monthly, with inbound and outbound voice campaigns, Webphone, automatic call distribution, IVR, call recording, and voice campaign reports. The Omnichannel Agent License costs $39 per agent per month and adds a unified messaging inbox, WebChat, SMS, WhatsApp communication, and Telegram. Cloud Contact Center licensing requires a minimum of 5 agents, while on-premise or private-cloud deployment requires a minimum of 10 agents.
The platform’s breadth is its main advantage for teams that need more than basic business calling. Routing can use DIDs, caller ID, dial patterns, and trunks; IVR menus can direct callers to configurable destinations; and the RESTful API covers extensions, ring groups, queues, trunks, routes, and IVR. CRM systems, email, databases, and messaging channels can connect through integrations and APIs. Issabel is a strong choice for open-source teams needing customizable telephony and omnichannel contact-center functions. Teams seeking a simpler hosted phone service or a narrowly focused calling tool may prefer a less configurable option.
Your product? Our editors can test Issabel in depth and publish a review, labelled as paid · from $149/mo →
Issabel pricing
All 3 Issabel plans and prices →
Issabel fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $8.33/mo |
| Included users | Not verified |
| Business numbers | Not verified |
| Auto attendant | Yes |
| Call routing | Custom |
| Voicemail transcription | Yes |
| Desktop and mobile apps | Not verified |
| Deployment | Cloud, Self-hosted, Mobile |
| Platforms | Web, Linux, Android |
| Compliance & security | 2FA |
| Support | Email, Tickets, Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 8 integrations: CRM systems, email, databases, WhatsApp, Telegram, WebChat … |
| Pricing | Free plan (source) |
| Website | issabel.com |
| Facts checked | 21 Sep 2026 |
Issabel integrations
Issabel lists 8 integrations on its own site.
- CRM systems
- databases
- Telegram
- WebChat
- SMS
- OpenAI
Alternatives to Issabel
- Zoom PhoneA paid cloud phone system with broad calling, routing, messaging, and integration coverage.9.2
- RingCentral RingEXA broad cloud communications suite for established organizations with complex calling needs.9.1
- NextivaA broad business phone platform for teams that need calling, messaging, routing, and analytics.8.8
See all Issabel alternatives →
Also Ranked In
Issabel is ranked in 4 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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