FreePBXFree open-source PBX built on Asterisk
vs
VonageCommunications APIs. Unified Communications. Contact Centers.
Comparison · Contact Center · weekly run Nov 3
FreePBX vs Vonage
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Vonage is the stronger AI pick in Contact Center: it has a visibility score of 1.3 versus 0 for FreePBX.
Choose FreePBX if…
No clear advantage in the published data.
Choose Vonage if…
- You want the brand AI engines rank higher (1.3 vs 0)
- You need ISO 27001 or PCI-DSS or SOC or HITRUST or CSA STAR coverage
- Flexible CPaaS APIs
- Recognised as a prominent communication-first provider
AI visibility side by side
Latest weekly run · Nov 3
| Metric | FreePBX | Vonage |
|---|---|---|
| Visibility score | 0% | 1.3% |
| Change vs last week | no change0% | up+0.3% |
| Rank in Contact Center | #42 | #31 |
| Share of voice | 0% | 0.7% |
| Mentions this run | 0 | 4 |
| Positive in AI answers | — | 14% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
FreePBX 0pp · Vonage +0.4pp over 1 weekly runs.
Engine by engine
Vonage leads on 3 of 3 engines
ChatGPT
AI Mode
Perplexity
FreePBXVonage
Head to head in AI answers
0 engine answers name both brands
0FreePBX ranked higher
0Vonage ranked higher
Features, pricing & fit
| Dimension | FreePBX | Vonage |
|---|---|---|
| Deployment | Self-hosted software, cloud images, and Sangoma-certified appliances | Cloud |
| Compliance | — | ISO 27001, PCI-DSS, SOC, HITRUST, CSA STAR |
| Support | Community forum | — |
| Founded | 2004 | 2001 |
| Headquarters | 100 Renfrew Dr, Markham, Ontario, Canada | Holmdel, New Jersey |
| Employees | — | 1,001–5,000 |
| Funding | — | Financing |
| Best for | Cloud PBX providers, VoIP providers, and contact center software vendors, based on G2 review data | — |
Pros and cons
Themes from the AI answers that mention each brand
FreePBX
Profile in progress.
Vonage
- Flexible CPaaS APIs
- Recognised as a prominent communication-first provider
- Intelligent workspace features
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 98.8%·next run
Cite as: SlateIndex, “FreePBX vs Vonage”, https://slateindex.ai/compare/freepbx-vs-vonage, data of Nov 3, 2026. Licence: CC BY 4.0.