About Us - VoIPmonitor® Open Source VoIP Monitoring

How VoIPmonitor Was Born

VoIPmonitor is an open-source packet sniffer with a commercial web GUI and call recorder for monitoring and troubleshooting VoIP/RTC networks.

We started as Linux and VoIP enthusiasts experimenting with Asterisk, OpenSER and other open-source projects back in 2003 – and ended up building the tool we were missing ourselves.

In the early 2000s, running VoIP in production meant a lot of guesswork. There was no lightweight, always-on monitoring tool that could:

Watch SIP/RTP traffic 24/7
Measure real call quality, not just pings
Alert engineers before users start complaining

So instead of waiting for someone else to build it, we created VoIPmonitor as an open-source sniffer, and later added a commercial web GUI for deep analysis, reporting, alerting and recording.

The core sniffer remains open-source under GNU/GPL and is widely used on its own or together with our GUI.

Where We Are Today

With 15+ years on the market, VoIPmonitor has grown from a personal side project into a mature product used by service providers, carriers, call centres and enterprises in many countries.

Typical deployments include:

VoIP operators monitoring call quality and failures across their core and access networks
Call centres and enterprises archiving calls for quality, training and compliance
Integrators and MSPs using VoIPmonitor as their standard troubleshooting tool

Our largest single-server deployments handle tens of thousands of concurrent calls while providing detailed CDRs, MOS metrics, packet-level analysis and full session recording.

How We Work

We are a small, focused team led by the original author of VoIPmonitor, still actively involved in the codebase, support and customer projects.

What this means in practice:

Direct access to engineers – the people answering your questions are the same people who work on the product
Long-term product focus – no outside funding, no pivoting to the "next big thing"; VoIP monitoring and recording is what we do
Transparent licensing – simple pricing based mainly on channels, with a clear upgrade path as your traffic grows
Feature development driven by real deployments – many of the things VoIPmonitor can do today were built together with customers solving concrete problems in the field

Independent Company, Global Reach

VoIPmonitor is developed and operated by Martin Vit as an independent software vendor based in the Czech Republic. Instead of building a large corporate structure, we chose to stay lean and close to the product, working with a distributed network of partners and integrators worldwide.

This Setup Lets Us

Move fast when customers need new features or integrations
Keep costs under control and pricing reasonable
Stay personally accountable for the quality of our software and support

Customers Come Because They Need

Deep visibility into SIP/RTC traffic
Reliable recording and long-term archiving
A tool that scales from a single box to large distributed deployments

Why Customers Stay With Us

The software keeps evolving and is actively maintained
Support is responsive and technical
We treat their deployment and data as if it were our own network

If you are considering VoIPmonitor for your environment, we will be happy to help you evaluate it, design an architecture and get your first deployment running smoothly.

About VoIPmonitor