Side by side
FastNetMon vs WhatsUp Gold
Both stand on network monitoring. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APILinuxMac+2
Choose FastNetMon if your network team needs configurable DDoS detection with several mitigation methods and supports its traffic input protocols. Check that the 10G plan's 10 Gbps capacity and one-instance allowance fit your network, and account for the activation fee and bandwidth-based licensing.
Visit FastNetMon Free trial APISelf-hostedWeb+1
WhatsUp Gold brings infrastructure monitoring, topology mapping, automation, and integrations into one product. Its deployment and licensing limits are worth checking against the size and platform requirements of an environment.
Visit WhatsUp GoldThe facts
| FastNetMon | WhatsUp Gold | |
|---|---|---|
| Free plan | Yes | A free trial |
| Open source | Not published | Not published |
| Runs on | API, Linux, Mac, Self-hosted, Web | API, Self-hosted, Web, Windows |
| Lowest paid plan | FastNetMon LiveView add-on: $720 a year | Network Detection & Response Lite: $866 a year |
| Plans published | 5 | 6 |
| Maker | Not published | Not published |
| Website | fastnetmon.com | whatsupgold.com |
| On network monitoring | #6 of 57 | #46 of 57 |
FastNetMon: what it does well
- Detects volumetric and packet-rate DDoS attacks in near real time.
- Accepts sFlow, NetFlow, IPFIX, jFlow, and mirrored traffic.
- Supports blackholing, BGP FlowSpec filtering, and external scrubbing diversion.
- Supports IPv4, IPv6, and listed major networking vendors.
- 30-day trial includes detection, mitigation tools, visibility, and analytics.
What to know first
- The 10G plan covers 10 Gbps of observed traffic.
- The 10G plan allows one FastNetMon instance and one monthly support ticket.
- Monthly subscriptions have a one-time $85 USD activation fee.
- Licensing must cover total network bandwidth; listed prices exclude UK VAT where applicable.
WhatsUp Gold: what it does well
- Monitors networks, servers, applications, storage, and cloud resources.
- Topology maps show relationships, dependencies, and device status.
- Can automate common fixes with scripts and policies.
- Integrates with AWS CloudWatch and Azure Monitor.
What to know first
- Server software requires Windows Server 2019, 2022, or 2025.
- Business costs $1,229 a year for 50 devices.
- A single server can poll at most 100,000 metrics.
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