Side by side
sipmon vs SolarWinds VoIP & Network Quality Manager
Both stand on voip monitoring software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Paid LinuxSelf-hosted
sipmon brings SIP correlation, media metrics, and diagnostic rules into a standalone Linux tool. On busy relay hosts, capture may need filtering or a dedicated mirrored capture box.
Visit sipmon Free trial Self-hostedWebWindows
VNQM combines call-quality investigation with WAN QoS monitoring, including alerts and support for named call managers. Teams should account for its self-hosted deployment, server requirements, and monthly call limit when considering it.
Visit SolarWinds VoIP & Network Quality ManagerThe facts
| sipmon | SolarWinds VoIP & Network Quality Manager | |
|---|---|---|
| Free plan | Not published | A free trial |
| Open source | Not published | Not published |
| Runs on | Linux, Self-hosted | Self-hosted, Web, Windows |
| Lowest paid plan | Not published | SolarWinds Observability Self-Hosted (includes VoIP & Network Quality Manager): $8 a month |
| Plans published | None | 1 |
| Maker | Not published | Not published |
| Website | github.com | solarwinds.com |
| On voip monitoring software | #19 of 20 | #10 of 20 |
sipmon: what it does well
- Runs without a PBX.
- Accepts live, file, stdin, and event-log captures.
- Reports jitter, loss, delay estimates, and MOS.
- Includes more than 20 diagnostic rules.
- Does not store raw RTP payload.
What to know first
- Linux is the listed platform.
- High-rate capture can compete with rtpengine for CPU.
- Synthetic call tests are not included.
SolarWinds VoIP & Network Quality Manager: what it does well
- Tracks jitter, latency, packet loss, round-trip time, and MOS
- Call records help investigate affected calls and call paths
- Real-time alerts use user-defined thresholds
- Monitors Cisco IP SLA and Juniper RPM operations
- Includes synthetic call tests and SIP trunk monitoring
What to know first
- No free plan; pricing is on request
- Does not support more than six million calls monthly
- Self-hosted deployment requires a Windows Server environment
- SolarWinds recommends keeping its server off public internet
Alternatives to sipmon Alternatives to SolarWinds VoIP & Network Quality Manager The whole list