21 alternatives · from contract testing tools

Alternatives to Pact

Pact centers on code-first contract tests for HTTP and message integrations. Consumer tests generate contracts describing specific interactions, so consumer and provider applications can be checked independently rather than deploying the whole system. Implementations span more than 10 languages, while mock and stub servers, provider verification, plugins, and the Pact Broker support HTTP, synchronous and asynchronous messages. The Broker can share verification results and…

18.2

Karate

Free planOpen sourceAPIExtensionLinux

From $100 a year

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27.6

PactFlow

PactFlow is a managed Pact Broker for checking whether services in a distributed system meet their integration contracts.

Free planWebAPILinux

From $115.42 a month

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37.2

Microcks

Microcks is a free, open-source tool for mocking and testing APIs and microservices.

Free planWebAPIExtension

Free plan

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4
oasdiff
oasdiff compares OpenAPI specifications, creates changelogs, and flags breaking changes before release.
Free planWebAPILinuxmacOS
7.2From $100 a month
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5
Confluent Cloud
Confluent Cloud is a managed data streaming platform built around a serverless Apache Kafka engine.
Free planWebAPILinux
7.1From $385 a month
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6
Pact Broker
Pact Broker shares consumer-driven contracts and verification results, primarily for Pact contracts, while also accepting contracts that can be represented as JSON.
Free planWebAPILinuxSelf-hosted
6.8From $115.42 a month
Visit
7
Specmatic
Specmatic turns API specifications into executable contracts used to design, build, and govern APIs.
Free planLinuxmacOSSelf-hostedWindows
6.8From $120 a year
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8
API Contract Tester
API Contract Tester checks whether API responses match an expected contract, helping frontend and backend teams find schema differences.
Free planWeb
6.6From $19 a month
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9
SpecShield
SpecShield compares OpenAPI descriptions to flag changes that could break existing API consumers, then reports results as GitHub checks.
Free planWebAPIExtension
6.5From $89 a month
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10
Schemathesis
Schemathesis generates property-based tests from OpenAPI and GraphQL schemas to help engineers find API bugs.
Free planLinuxmacOSSelf-hostedWindows
6.4Free plan
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11
BBC Consumer Contracts
BBC Consumer Contracts is a free JavaScript project for describing executable API contracts from a consumer's perspective.
Free planAPISelf-hosted
6.2Free plan
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12
Apicurio Registry
Apicurio Registry is a runtime server for storing API designs and schemas as artifacts, which users can add, update, or remove through a REST API.
WebAPILinuxmacOS
6.1
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13
BitDive
BitDive records runtime behavior in Java and Kotlin services and turns executions into replayable JUnit 5 tests for checking code changes.
Free planWebAPISelf-hosted
6.1Free plan
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14
Citrus
Citrus is a free test framework for automated integration testing of messaging applications and microservices.
Free planLinux
5.9Free plan
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15
Karapace
Karapace is a free, open-source implementation of the Kafka Schema Registry and Kafka REST Proxy.
Free planAPISelf-hosted
5.9Free plan
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16
Stubborn Contract
Stubborn Contract is the official continuation of Spring Cloud Contract, providing consumer-driven contract testing for HTTP and message-based interactions.
Free planAPISelf-hosted
5.9Free plan
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17
WSO2 Contract Test Runner
WSO2 Contract Test Runner is an open-source library for checking live REST API endpoints against consumer-defined contracts.
Free planLinuxSelf-hosted
5.8Free plan
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18
Signet
Signet is an open-source framework for contract testing microservices against defined specifications.
WebAPISelf-hosted
5.6
Visit
19
Entente
Entente is an open-source contract testing platform that uses OpenAPI specifications alongside recorded API interactions.
WebAPISelf-hosted
5.5
Visit
20
ContractCase
API
5.3
Visit
21
GraphQL Inspector
4.4
Visit

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