Entente vs Stubborn Contract

Entente8.8Visit Stubborn Contract8.6Visit

Higher score Entente #5 in Contract Testing Tools 8.8/10 Open source ✓ 4 of 6 features Visit Entente

vs

Stubborn Contract #7 in Contract Testing Tools 8.6/10 Free plan Free plan✓ 4 of 6 features Visit Stubborn

• Entente fits best

  OpenAPI-first teams with GitHub workflows

• Stubborn Contract fits best

  JVM and Node.js contract-testing teams

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Side by side

Feature	Entente 8.8/10 Visit ↗	Stubborn Contract 8.6/10 Visit ↗
At a glance
Editor score	8.8	8.6
Ranking	#5 in Contract Testing Tools	#7 in Contract Testing Tools
Best for	OpenAPI-first teams with GitHub workflows	JVM and Node.js contract-testing teams
Pricing model	Free	Free
Starting price	Open source	Free plan
Free plan	Not checked yet	✓ (best)
Free trial	—	—
Deployment	Cloud, Self-hosted	Self-hosted
Support	Docs	Community, Docs
Integrations	2 integrations	8 integrations
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Entente 4/6 · Stubborn Contract 4/6
Consumer verification	✓	✓
Provider verification	✓	✓
Contract registry	✓	✓
AsyncAPI support	Not checked yet	Not checked yet
GraphQL support	Not checked yet	Not checked yet
Self-hosted deployment	✓	✓
Specs
Contract formats	OpenAPI	YAML, Groovy, Java, Kotlin
Our review
Pros	Covers mocking, interaction recording, provider verification, and fixtures Adds deployment compatibility checks and environment-specific contract management Open source, MIT licensed, and available as a self-hosted deployment	Covers HTTP and messaging contracts with consumer and producer verification Supports YAML, Groovy, Java, Kotlin, and Node.js workflows Adds a self-hosted broker and deployment checks through Can I Deploy
Cons	Contract format support is centered on OpenAPI Workflow integrations focus on GitHub and GitHub Actions Self-managed deployment involves Cloudflare Workers and Neon PostgreSQL	Self-hosted deployment places infrastructure responsibility on the team The broad feature set may be more than narrow HTTP-only projects need Enterprise partnerships are scoped individually rather than through fixed plans
Our verdict	Entente is a contract testing platform for teams developing and operating service APIs. Its OpenAPI-first approach defines contracts from API specifications, then supports both consumer and provider sides of the testing workflow. Consumer… Read the review →	Stubborn Contract is an open-source consumer-driven contract testing library for teams working across JVM and Node.js projects. Consumers define expected HTTP or messaging interactions in contract files, and producers use generated… Read the review →

Strengths and trade-offs

• Entente — where it wins

  • Covers mocking, interaction recording, provider verification, and fixtures
  • Adds deployment compatibility checks and environment-specific contract management
  • Open source, MIT licensed, and available as a self-hosted deployment

  Where it doesn't

  • Contract format support is centered on OpenAPI
  • Workflow integrations focus on GitHub and GitHub Actions
  • Self-managed deployment involves Cloudflare Workers and Neon PostgreSQL

• Stubborn Contract — where it wins

  • Covers HTTP and messaging contracts with consumer and producer verification
  • Supports YAML, Groovy, Java, Kotlin, and Node.js workflows
  • Adds a self-hosted broker and deployment checks through Can I Deploy

  Where it doesn't

  • Self-hosted deployment places infrastructure responsibility on the team
  • The broad feature set may be more than narrow HTTP-only projects need
  • Enterprise partnerships are scoped individually rather than through fixed plans

• Entente8.8/10 · Open source

  A focused OpenAPI contract workflow for teams building APIs with GitHub.

  Visit EntenteFull verdict →
• Stubborn Contract8.6/10 · Free plan

  A broad self-hosted contract-testing toolkit for JVM and Node.js teams.

  Visit StubbornFull verdict →