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Cybersecurity · head to head

Arnica vs MuckRock

Arnica logo

Arnica

Cybersecurity

AI-native application security platform detecting and fixing vulnerabilities across the SDLC

From
Free
Free plan
Yes
Full reviewWebsite
MuckRock logo

MuckRock

Government

FOIA Filing and Research Platform

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Arnica per-identity pricing ($25-$50/person/year) requires tracking active developers; MuckRock muckRock's core platform, Squarelet identity service, and DocumentCloud are licensed AGPL-3.0, which requires anyone running a modified version as a network service to release their source code
  • They diverge on capability: Arnica covers AI SAST, MuckRock covers FOIA Filing.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Arnica and MuckRock actually diverge.

Attributes where Arnica and MuckRock differ
AttributeArnicaMuckRock
Pricing modelPer-identity subscription with annual discountfreemium
PlatformsWeb, GitHub, IDEWeb
CategoryCybersecurityGovernment
FoundedUnknown2010

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Arnica

  • AI SAST
  • Software Composition Analysis
  • Secrets detection
  • IaC scanning
  • Container scanning
  • SBOM generation
  • Agentic rules
  • Pipelineless integration

Only in MuckRock

  • FOIA Filing
  • Request Tracking
  • Document Archive
  • Collaboration
  • Agency Directory
  • DocumentCloud
  • News Organizations
  • Research Tools

What people use each for

The jobs each tool is most often brought in to do.

Arnica

  • Detecting AI-generated vulnerabilities in Copilot and Cursor suggestionsnot MuckRock
  • Finding hardcoded secrets before they reach productionnot MuckRock
  • Mapping container vulnerabilities back to source codenot MuckRock
  • Generating SBOM for supply chain compliance requirementsnot MuckRock
  • Scanning infrastructure-as-code for misconfiguration risksnot MuckRock

MuckRock

  • Citizen Servicesnot Arnica
  • Records Managementnot Arnica
  • Public Safetynot Arnica
  • Civic Engagementnot Arnica

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Arnica

  • Per-identity pricing ($25-$50/person/year) requires tracking active developers
  • Overage identity tracking via 90-day PR activity can be unpredictable
  • Free plan limited to weekly updates, requiring upgrade for real-time scanning
  • Advanced add-ons (Image Scanning, AI SAST, Agentic Rules Enforcer) pricing not published
  • On-premises deployment limited to Enterprise tier

MuckRock

  • MuckRock's core platform, Squarelet identity service, and DocumentCloud are licensed AGPL-3.0, which requires anyone running a modified version as a network service to release their source code

Pricing, plan by plan

Arnica

Free
  • FreeFree
    • No credit card required
    • 14-day trial available
    • Weekly risk identification updates
  • Core Business$360/year
    • Monthly billing option at $30/identity/month
    • Annual billing at $25/identity/month (17% discount)
    • Real-time risk scanning and notifications
  • Core Enterprise$720/year
    • Monthly billing option at $60/identity/month
    • Annual billing at $50/identity/month (17% discount)
    • All Core Business features

MuckRock

Free
  • BasicFree
    • FOIA Filing
    • Request Tracking
    • Document Archive

Which should you pick?

Choose Arnica if

  • You need ai sast.
  • You want to start without paying.
  • You work on Web, GitHub, IDE.
  • You also want software composition analysis.
Arnica review

Choose MuckRock if

  • You need foia filing.
  • You want to start without paying.
  • You also want request tracking.
MuckRock review

Questions people ask

Is Arnica or MuckRock better?
Neither clearly leads. Arnica starts at Free and MuckRock at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Arnica or MuckRock?
Arnica starts at Free and MuckRock at Free.
Does Arnica or MuckRock run on more platforms?
Arnica runs on Web, GitHub, IDE. MuckRock runs on Web.
Can I use Arnica for free?
Both have a free tier, so you can try either at no cost before committing.
What is Arnica best used for?
Arnica is most often used for detecting ai-generated vulnerabilities in copilot and cursor suggestions, finding hardcoded secrets before they reach production, mapping container vulnerabilities back to source code, generating sbom for supply chain compliance requirements. Of those, detecting ai-generated vulnerabilities in copilot and cursor suggestions and finding hardcoded secrets before they reach production are not what MuckRock is typically brought in for.
What can Arnica do that MuckRock cannot?
Arnica covers AI SAST, Software Composition Analysis, Secrets detection, IaC scanning. MuckRock covers FOIA Filing, Request Tracking, Document Archive, Collaboration.

Answered from the vendors’ own pages

Arnica: How are identities defined in Arnica pricing?

Identities are any users and other contributing entities that contributed code and/or had PR activity during the last 90 days. This ensures billing matches active developers.

Source
Arnica: What is the annual discount?

Annual prepayment offers approximately 17% savings versus monthly billing. Core Business annual is $300/identity versus $360 for monthly.

Source
Arnica: Can I cancel or downgrade Arnica anytime?

Yes. Subscriptions can be cancelled or downgraded at any time. Overage identities receive automatic protection with true-up invoicing.

Source
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