Quad9 vs threatER: side-by-side comparison (2026)
Quad9 is a free intrusion detection and prevention systems solution. threatER is a commercial intrusion detection and prevention systems solution by threatER. Features, integrations, deployment and the company behind each one, side by side.
A free DNS recursive service that blocks malicious host names and protects user privacy.
Preemptive threat blocking platform using IP segmentation and DNS security.
Side-by-side comparison
Feature
Quad9
threatER
Pricing model
Free
Commercial
Category
Intrusion Detection and Prevention Systems
Intrusion Detection and Prevention Systems
Deployment and fit
Deployment type
Cloud
Cloud
Company size fit
Startup, SMB, Mid-Market, Enterprise
Startup, SMB, Mid-Market, Enterprise
Company
Company
–
threatER
Use cases and capabilities
DNS Security
Yes
Yes
Content Filtering
No
Yes
Threat Feed
No
Yes
IoT Security
No
Yes
Network Protection
No
Yes
Traffic Filtering
No
Yes
Core features
10 features listed
8 features listed
Integrations
No integrations listed
3 integrations listed
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