ProcFilter vs Sigma Query: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
ProcFilter is a free detection engineering tool. Sigma Query is a free detection engineering tool. Compare features, ratings, integrations, and community reviews side by side to find the best detection engineering fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Malware analysts and defensive teams with Windows-heavy environments should use ProcFilter for its native YARA integration, which lets you operationalize your signature library directly at process execution without custom parsing or middleware. The tool is free and maintains active GitHub development (397 stars), removing budget friction for smaller security shops testing process-level detection. Skip this if you need agent-based endpoint telemetry across mixed OS environments or hunting capabilities beyond process filtering; ProcFilter is deliberately narrow and won't replace a traditional EDR.
Startups and mid-market SOCs building detection programs from scratch should use Sigma Query to avoid reinventing rules; 3,000+ community-maintained detections mapped to 385+ MITRE ATT&CK techniques means you start with mature baselines instead of blank templates. The free model and cloud deployment eliminate procurement friction, and multi-platform coverage across Windows, Linux, cloud providers, and network appliances lets you apply the same rule set across your entire stack without rewriting. Skip this if your team lacks SIEM experience or needs rules packaged inside a commercial product with vendor support; Sigma Query requires you to understand your detection logic well enough to integrate and tune community rules yourself.
