Find the right NIST framework consultant. Know the real cost.
We’ve profiled 14 consultancies and assessors working with NIST CSF 2.0, SP 800-53, and SP 800-171 — their services, their timelines, who to avoid. Every firm is real, every website verified. No pay-to-rank, no fabricated reviews, no “NIST certification” fiction.
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How quote matching works
- Tell us once — 4 questions, 2 minutes, free.
- We match you — licensed CPA firms filtered to your size, scope, and timeline.
- Auditors quote you — they send scoped quotes directly; you pick.
We are a quote-matching service, not an audit firm, and listings are not endorsements. How we vet firms and label prices →
Firms that implement NIST CSF 2.0, SP 800-53, and SP 800-171
Every firm below is a real, operating practice with a verified website and genuine work against at least one of the three NIST publications. Sponsorship never affects ranking; see our methodology.
Summit 7
Summit 7 is a cybersecurity consultancy focused on defense contractors, built around NIST SP 800-171 implementation and CMMC readiness. Its practice c…
CyberSheath
CyberSheath provides managed compliance services for defense contractors working toward NIST SP 800-171 and CMMC requirements — combining managed secu…
SecureStrux
SecureStrux is a cybersecurity consultancy serving defense and federal contractors on NIST SP 800-171 implementation, CMMC readiness, and risk managem…
Redspin
Redspin is a cybersecurity assessment firm and an authorized CMMC Third-Party Assessment Organization (C3PAO). It performs CMMC assessments and advise…
The right firm depends on who you are
A federal agency and a commercial enterprise should not hire the same firm the same way. We've grouped the directory by buyer type.
Federal & 800-53
FedRAMP 3PAO assessments, 800-53 control assessments, and federal consulting.
Defense industrial base
800-171 implementation and CMMC readiness for contractors handling CUI.
Commercial CSF programs
CSF 2.0 program design and implementation for non-regulated companies.
Explained honestly
Cost Guide
Planning ranges, what drives price, and an interactive estimator.
Timeline
How long each phase takes, from assessment to operating program.
Readiness Check
A 2-minute scored quiz that tells you if you're CISA-ready.
2026 Pricing Report
A meta-analysis of cost data, every number cited or labeled.
Best Picks by Use Case
Buyer-matched picks: federal, contractors, critical infrastructure.
Our Methodology
How we vet firms, label every price, and keep rankings unbought.
Basics
Is there such a thing as “NIST certification”?
No. NIST publishes standards and guidance — it does not certify companies. “NIST certified” on a vendor site means their own claim about following a NIST publication; ask which publication, which controls, and who verified it.
What’s the difference between 800-171 and CMMC?
800-171 is the requirement set (what to implement); CMMC is the DoD verification program (how it's checked). Level 2 aligns to the 110 800-171 practices and generally requires an authorized C3PAO assessment.
How much does 800-171 compliance cost?
Our labeled estimates: readiness assessment $15,000–$40,000; CMMC Level 2 C3PAO assessment $50,000–$150,000 — before remediation and staff time. See the cost guide for the full breakdown.
Do I need a C3PAO or just a consultant?
A consultant prepares you (readiness, SSP, remediation); a C3PAO assesses you. Hire the consultant first, the C3PAO when you're ready — reversing the order is the classic expensive mistake.
How is this directory different from a Google search?
Every firm is verified real (website checked) with genuine NIST-publication practices, costs are labeled estimates with provenance — and ranking can’t be bought.
Get quotes from verified firms
Tell us about your mission and timeline once. We'll match you with firms who fit — no obligation, no spam.
How it works: tell us once (4 questions, 2 min) → we match licensed auditors to your size and scope → they send scoped quotes directly. Free, no obligation.