Plans & licensing

Simple device-based pricing. Every feature included.

One license per monitored device (unique IP) — unlimited interfaces, sensors, and elements on every device. NPM, NCM, NetFlow analytics, server monitoring, compliance, and dynamic maps in one platform, from $3 per device per month — up to 45% below legacy suites.

Free

Full core monitoring for labs, branch sites, and small networks. Free forever.

$0 forever

Up to 10 monitored devices. No credit card required.

  • Up to 10 monitored devices
  • Network & server up/down monitoring
  • SNMP performance metrics
  • Dynamic network maps
  • Hardware & software inventory
  • Email alerting
  • Community support
Get started free
Essentials

Complete network and server monitoring for teams that need real visibility.

$3 / device / mo

Per device (IP), billed annually. Minimum 25 devices — from $900/year.

  • Full network performance monitoring (NPM)
  • Physical & virtual server monitoring
  • Advanced dynamic network maps
  • IT asset inventory & lifecycle tracking
  • Unlimited interfaces & elements per device
  • Intelligent multi-channel alerting
  • Scheduled & custom reports
  • 24/7 email support
Start free trial
Enterprise

Mission-critical scale with APM, high availability, and air-gapped deployment.

$7.50 / device / mo

Per device (IP), billed annually. Volume pricing from 100+ devices.

  • Everything in Professional, plus:
  • Application performance monitoring (APM)
  • High availability included — no extra license
  • Unlimited multi-site remote sensors
  • Air-gapped deployment option
  • Custom integrations & onboarding
  • Dedicated account manager
  • 24/7 SLA-backed support
Contact sales

Prices in USD per monitored device (unique IP), billed annually. Every feature in a tier is included in the per-device price — no add-on modules. ZenShield security analytics is licensed separately; see the ZenShield firewall-log comparison and ask sales for a bundle quote.

Volume pricing

The more you monitor, the less you pay per device.

Volume discounts apply automatically to Essentials, Professional, and Enterprise — no negotiation required. Estimate your annual subscription below.

100+ devices
10% off

Applied automatically

250+ devices
15% off

Applied automatically

500+ devices
20% off

Applied automatically

1,000+ devices
25%+

Custom quote for large estates

Volume discount applied automatically: 10% at 100+, 15% at 250+, 20% at 500+, 25% at 1,000+ devices. Billed annually.

Effective per-device rate$4.50 / device / mo
Volume discount10%
Annual subscription$5,400 / yr
Monthly equivalent$450 / mo

vs. SolarWinds Observability Advanced list ($14/node/mo): save $11,400/year (68%).

Market comparison

Enterprise-suite features. Challenger pricing.

The same core capabilities as the incumbent suites at a fraction of the list price — with configuration management, flow analytics, and compliance bundled instead of sold as add-on modules.

Platform Published list price Licensing model NCM, flow & compliance
Zentryc Professional $5 / device / mo Per device (IP), annual — unlimited elements per device All included
SolarWinds Observability Self-Hosted (Advanced) $14 / node / mo Per node, annual — 3-year commitments common Included; HA licensed separately
Progress WhatsUp Gold $1,229 / $2,049 / $3,469 per year for 50 devices (~$2–$6/device/mo) Per device, annual — starter SKUs at 50 devices; scale is a quote NTA+ and configuration management in higher editions
Auvik ~$25+ / network device / mo Per billable network device Flow analytics in higher plan
ManageEngine OpManager ~$4–8 / device / mo equivalent Per device + paid add-on modules NCM, NetFlow & APM sold separately
Paessler PRTG sensor-based (~10+ sensors per device) Per sensor, annual Included; sensor counts grow fast
Datadog Quote-driven (hosts + modules + ingest) SaaS; hosts, custom metrics, logs, APM, network modules stack Network products / integrations; not an NCM replacement
LibreNMS $0 software license (GPLv3) Open-source; TCO is operator time + glue for flow/NCM Possible via plugins / adjacent tools; not productized NCM
Observium Community Free (QPL); Professional £250/yr; Enterprise £1,500/yr Flat annual editions; unlimited devices; TCO includes RANCID/flow/APM/HA ownership Network-first SNMP; traffic accounting on Professional+; broader NCM/NetFlow/APM scope may need adjacent tools

Competitor figures are published vendor list prices as of August 2026, normalized to per-device monthly equivalents where possible. SolarWinds Observability Self-Hosted public list (August 2026): Essentials $8, Advanced $14, Premier $17.50 per node/mo, billed annually on multi-year terms. Advanced includes flow + config management (apples-to-apples vs NPM+NTA+NCM). WhatsUp Gold starter prices are $1,229 / $2,049 / $3,469 per year for 50 devices on whatsupgold.com/pricing. Datadog is quote-driven. LibreNMS is GPLv3 with $0 software license—compare operator TCO, not a fake SKU. Observium list prices: Community Free (QPL), Professional £250/yr, Enterprise £1,500/yr; re-check observium.org before purchase. Regional pricing, bundles, and contract terms vary.

Like-for-like replacement pages: PRTG alternative · Nagios alternative · WhatsUp Gold alternative · Datadog alternative · SolarWinds · ManageEngine · Zabbix · LibreNMS · Observium · device vs sensor licensing · on-prem vs SaaS network monitoring

Included with every plan

The same foundation, on every tier.

No matter which plan you run, you get the on-premises model, all-inclusive licensing, and a full-access evaluation.

On-premises deployment

Every plan deploys fully on-premises. Telemetry, configurations, and reports stay on infrastructure you own and control — air-gapped on Enterprise.

No add-on modules

Every feature in your tier is part of the per-device price. No separately licensed NCM, flow, compliance, or HA modules — upgrading is a license key, not a project.

Free tier & 30-day evaluation

Monitor up to 10 devices free forever, and evaluate any paid tier for 30 days with full feature access. No credit card required.

Pricing FAQ

Questions about plans and licensing.

How device-based licensing works, what counts as a device, and what every plan includes.

Zentryc is licensed per monitored device — one license per unique IP address, billed annually. Every interface, sensor, and element on a device is included, so a 48-port core switch consumes exactly one license. There are no per-sensor, per-element, or per-user charges.
Any element with an IP address you monitor: routers, switches, firewalls, wireless controllers and access points, load balancers, physical and virtual servers, hypervisor hosts, storage arrays, printers, and UPS units. Paid plans start at a 25-device minimum, and the Free tier covers up to 10 devices.
No. Legacy suites typically sell configuration management, flow analytics, compliance, and application monitoring as separately licensed modules. In Zentryc, every feature listed in a tier is included in that tier's per-device price — Professional bundles network performance monitoring, configuration management, NetFlow analytics, user device tracking, and compliance reporting in one license.
Yes, automatically: 10% off list price at 100+ devices, 15% at 250+, 20% at 500+, and 25% or better at 1,000+. MSP, government, and education pricing is available on request — contact sales for a formal quote.
No. High availability is included with the Enterprise tier at no additional cost, including automatic failover between HA pairs — where legacy platforms typically license HA as a paid add-on.
Both. The Free tier monitors up to 10 devices forever with no credit card required. Every paid tier also includes a 30-day, full-featured evaluation in your own environment, and our team helps you stand it up.
Every plan deploys fully on-premises as an appliance or virtual machine you control, and Enterprise supports air-gapped deployment with no outbound connectivity. Our team plans rollout, device onboarding, and migration from suites such as SolarWinds, ManageEngine OpManager, PRTG, and WhatsUp Gold at no extra license cost.

Renewal coming up?

Get a formal quote sized to your device count.

Send us your device count and current tooling — we'll return a like-for-like comparison against your SolarWinds, PRTG, or ManageEngine renewal, typically 30–45% lower with more included.