vioscaleAI
Comparison

Nock vs Prism

On the evidence we track, Nock leads this comparison with a composite score of 56/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Nock full profile →Prism full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
★Nock56
Prism50
Score
vioscaleAI score
Nock56 / 100medium · 67%
Prism50 / 100low · 17%
Pricing
Free tier
Nock✓
Prism✓
Model
Price level
Nockfree
Prismfree
Transparent
Nock–
Prism✓
Integrations
Count
Nock–
Prism1
Security
Gdpr
Nock–
Prism✓
Scorecard
Nock5.4
Prism–
Trust center
Vulnerabilities
Adoption
Dependent repos
Nock130,286
Prism–
Github stars
Nock13,128
Prism–
Activity
Commits last 30d
Nock3
Prism–
Release
Cadence days
Nock12
Prism–
History
Nock20 items
Prism–
License
Spdx
NockMIT
Prism–
Language
Primary
NockJavaScript
Prism–
Market
Availability
Content
Faq

Capabilities

Feature-by-feature on the axes that matter for api mocking. “-” means undocumented, not absent.

Capabilities
Mocking mode
NockDynamic templating
PrismDynamic templating
Stateful scenarios
Nock-
Prism-
Fault chaos injection
Nock-
Prism-
Openapi import
Nock-
Prism✓
Proxy passthrough
Nock✓
Prism✓
Admin API
Nock-
Prism-
Deployment
NockEmbedded library
PrismCLI binary
Legacy protocol virtualization
Nock-
Prism-
Collaboration sharing
Nock-
Prism✓
Ci cd integration
Nock-
Prism✓
Open source
Nock✓
Prism✓
Market segment
NockDev tool
PrismDev tool
Pricing model
NockOpen source
PrismOpen source

What each one is

The product in its own terms, so the numbers below have context.

Nock

Leader

A Node.js library that intercepts HTTP requests in tests, allowing you to test modules that make HTTP calls in isolation without hitting real external services.

Independently observed

Prism

Stoplight is a design-first API platform that enables teams to collaboratively design APIs, generate interactive documentation, and create mock API servers with built-in validation. It supports multiple API standards including OpenAPI, AsyncAPI, and Arazzo.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Nock

Leader
Open sourceFree tier
as of verify ↗

Prism

from $11/moHybridFree tier14-day trial

Free open-source version. Stoplight SaaS: from $44/month (Basic). Free 14-day trial.

  • FreeFree
    • API editor
    • OpenAPI/JSON schema visual designer
    • Code-based editing
    • Local mock servers
    • API console
    • +2 more
  • Basic$44/month (annually) or $56/month; includes 3 users, $11 per additional user
    • OpenAPI/JSON schema visual designer
    • Interactive docs
    • Instant mock servers
    • Code-based editing
    • Schema reuse
    • +6 more
  • Startup$113/month (annually) or $147/month; includes 8 users, $11 per additional user
    • All Basic features
    • Private projects
    • Multi-branch support
    • Custom domains, theming and favicon
    • Google Analytics integration
    • +3 more
  • Pro Team$362/month (annually) or $453/month; includes 15 users, $22 per additional user
    • All Startup features
    • Shared style guides
    • Workspace groups
    • Remove Stoplight branding
    • Self-hosted Git providers
    • +6 more
  • EnterpriseContact sales
    • All Pro Team features
    • Custom payment terms
    • Invoicing
    • Priority support
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Nock–
Prism✓
Deployment
Cloud / SaaS
Nock–
Prism✓
Self-hosted
Nock–
Prism✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Nock

Leader

Not documented yet.

Prism

9 total
  • GitHub
  • GitLab
  • Azure DevOps
  • Bitbucket
  • LDAP
  • SAML SSO
  • Google Analytics
  • OpenAPI
  • Postman
Independently observed
Still deciding?

Nock or Prism: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.