4
Bruno
Bruno is a Git-native API client for exploring and testing REST, GraphQL, gRPC, and WebSocket APIs.
Free planOpen sourceAPIExtensionLinuxmacOS
8.1From $6 a month
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5
Apidog
Apidog is an API platform for designing, debugging, mocking, testing, and documenting APIs, with GraphQL and SOAP support.
Free planWebAPIExtensionLinux
8.0From $9 a month
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6
PactFlow
PactFlow is a managed Pact Broker for checking whether services in a distributed system meet their integration contracts.
Free planWebAPILinuxSelf-hosted
7.6From $115.42 a month
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7
Postman
Postman is a platform for designing, testing, distributing, documenting, and monitoring APIs.
Free planWebExtensionLinuxmacOS
7.6From $9 a month
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8
ReadyAPI
WebAPILinuxmacOS
7.6
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9
Pact
Pact is a code-first tool for contract testing of HTTP and message integrations.
Free planAPILinuxmacOSSelf-hosted
7.5From $115.42 a month
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10
Hoppscotch
Hoppscotch is a collaborative, open-source platform for creating, testing, documenting and sharing APIs.
Free planWebAPILinuxmacOS
7.2From $6 a month
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11
Insomnia
Insomnia is an API collaboration platform for designing, testing, debugging, mocking, and governing APIs.
Free planLinuxmacOSSelf-hostedWindows
7.2From $12 a month
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12
Keploy
Keploy records application traffic and turns it into API tests and dependency sandboxes for local development, CI, and Kubernetes verification.
Free planWebAPIExtensionLinux
7.2From $19 a month
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13
Kreya
Kreya is a desktop API client for exploring, testing, and automating API workflows.
Free planLinuxmacOSWindows
7.1Free plan
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14
Thunder Client
Thunder Client is a REST API client that runs inside VS Code and JetBrains IDEs.
Free planExtensionLinuxmacOSWindows
7.0From $3 a month
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15
Yaak
Yaak is a local-first desktop API client for sending requests, debugging APIs, and organizing work with Git.
Free planLinuxmacOSWindows
7.0From $79 a year
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16
Assertible
Assertible tests and monitors APIs, websites, and other HTTP services for uptime, availability, and correct behavior.
Free planWebAPI
6.9From $25 a month
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17
Parasoft SOAtest
Parasoft SOAtest automates functional, security, and performance testing for APIs and microservices.
AndroidiOSAPILinux
6.7
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18
RESTest
RESTest is a free, open-source black-box tool that generates requests from OpenAPI documents, exercises REST APIs, checks responses, and reports faults.
Free planLinuxSelf-hostedWindows
6.5Free plan
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19
EvoMaster
Free planAPILinuxmacOSSelf-hosted
6.4Free plan
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20
EvoMaster
EvoMaster is a free, open-source tool that generates system-level tests by fuzzing web and enterprise applications.
Free planAPILinuxmacOSSelf-hosted
6.4Free plan
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21
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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22
Hurl
Hurl is a free command-line tool for running HTTP requests written in a plain-text format.
Free planLinuxmacOSSelf-hostedWindows
6.3Free plan
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23
Stoplight Prism
Stoplight Prism is a free, open-source command-line HTTP server for turning OpenAPI descriptions or Postman Collections into mock API servers.
Free planWebAPISelf-hosted
6.3Free plan
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24
Tavern
Tavern is a free tool for developers who want to automate API tests using YAML.
Free planLinuxSelf-hosted
6.3Free plan
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25
PactumJS
PactumJS is a free, open-source REST API automation testing tool for multiple levels of a software test pyramid.
Free planAPI
6.2Free plan
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26
Apiary
Apiary is a hosted web platform for designing, prototyping, documenting, and testing APIs.
Free planWebAPI
6.1Free plan
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27
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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28
HttpMaster
Free planWindows
5.9Free plan
Visit
29
REST Assured
Free planAPI
5.9Free plan
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30
Step CI
Step CI is a self-hosted, open-source framework for API security, performance, and load testing.
Free planSelf-hosted
5.9Free plan
Visit

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