Open-source vs proprietary contact center software – real world experience?

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Hi everyone,

I’m interested in hearing real-world experiences from people who have worked with both open-source and proprietary contact center software, especially in environments built around FreePBX / Asterisk.

On paper, open-source solutions offer flexibility, control, and cost benefits, while proprietary platforms promise ease of use, support, and faster deployment. But in practice, the trade-offs are not always so clear.

From your experience:

  • Where did open-source solutions work really well?

  • Where did proprietary systems actually save time or effort?

  • How do you evaluate long-term maintenance, upgrades, and scalability?

  • What about customization vs vendor lock-in?

  • Support: community vs paid vendor support — what has been more reliable for you?

I’m particularly interested in production environments, not demos or lab setups.

Looking forward to learning how others here have navigated this choice and what lessons you’ve learned.

Thanks!

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I’ve been working with PBX and contact-center systems for 15+ years. Over that time, I’ve seen many proprietary call-center analytics and outbound dialer vendors appear and disappear: projects abandoned, companies closed, no updates.

Today, from my experience, there are very few options left that are viable in real production environments.

  • VICIdial is still around and partially open source, but it has a steep learning curve, an outdated UI, and is hard to maintain and explain to customers.

  • QueueMetrics is the only platform I’ve used that has remained consistently maintained over the last 15 years, with frequent updates, active deployments, and features aligned with enterprise call-center needs. As an integrator, that continuity matters more than anything else.

QueueMetrics also provides outbound dialer for outbound calling: simple, reliable, and does exactly what it should. Both QueueMetrics and Wombat Dialer offer APIs, which is critical for real integrations.

For me, as an integrator, this combination gives:

  • proven stability, ongoing updates, vendor support and predictable behavior in production.

At that point, the license cost becomes secondary to reliability and continuity.

Hope this can help you.

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