Best Vetted Alternatives to Postman

H

Hoppscotch

Alternative to Postman

SecurityB

8.7/10

Rep Score: 900 Saves

Open SourceWeb app and self-hosted

Plays nice with

GitHubGitLabSlackDiscordJiraZapier

Best forTeams and individuals looking for an open-source, browser-based alternative that can be self-hosted.

Free and open source; optional hosted and enterprise offerings may be available depending on deployment needs.

Summary

An open-source API development ecosystem for testing REST, GraphQL, WebSocket, and more, available as a web app and self-hostable solution.

Why Switch

Teams switch from Postman to Hoppscotch when they want an open-source, self-hostable API client with a modern web experience and lower cost.

Pros

🟢Open source and self-hostable
🟢Fast, modern web-based experience

Cons

🔴Enterprise governance and workflow depth may be less mature than Postman
🔴Some teams may prefer a desktop-native client

0 builders switched

Go to Hoppscotch

H

Hoppscotch

Alternative to Postman

SecurityB

8.7/10

Rep Score: 900 Saves

Open SourceWeb app and self-hosted

Plays nice with

GitHubGitLabSlackDiscordJiraZapier

Best for

Teams and individuals looking for an open-source, browser-based alternative that can be self-hosted.

Cost

Free and open source; optional hosted and enterprise offerings may be available depending on deployment needs.

Summary

An open-source API development ecosystem for testing REST, GraphQL, WebSocket, and more, available as a web app and self-hostable solution.

Why Switch

Teams switch from Postman to Hoppscotch when they want an open-source, self-hostable API client with a modern web experience and lower cost.

Pros

🟢Open source and self-hostable
🟢Fast, modern web-based experience
🟢Supports multiple API protocols and collaborative use cases

Cons

🔴Enterprise governance and workflow depth may be less mature than Postman
🔴Some teams may prefer a desktop-native client
🔴Advanced enterprise features depend on deployment or add-ons

0 builders switched

Go to Hoppscotch

I

Insomnia

Alternative to Postman

Rep Score: 860 Saves

Desktop app with cloud/team servicesFreemium proprietary software

Plays nice with

GitHubGitLabSlackJiraZapier

Best forDevelopers who want a fast, focused API client for manual testing and request design.

Free core app available; paid team and enterprise features for collaboration, governance, and advanced workflows.

Summary

A developer-focused API client for designing, debugging, and testing REST, GraphQL, and gRPC APIs with a streamlined interface.

Why Switch

Teams switch from Postman to Insomnia when they want a lighter API client with a simpler workflow and less overhead for everyday debugging.

Pros

🟢Clean, lightweight interface
🟢Strong support for REST, GraphQL, and gRPC

Cons

🔴Less comprehensive collaboration and governance than Postman
🔴Smaller ecosystem of integrations

0 builders switched

Go to Insomnia

I

Insomnia

Alternative to Postman

Rep Score: 860 Saves

Desktop app with cloud/team servicesFreemium proprietary software

Plays nice with

GitHubGitLabSlackJiraZapier

Best for

Developers who want a fast, focused API client for manual testing and request design.

Cost

Free core app available; paid team and enterprise features for collaboration, governance, and advanced workflows.

Summary

A developer-focused API client for designing, debugging, and testing REST, GraphQL, and gRPC APIs with a streamlined interface.

Why Switch

Teams switch from Postman to Insomnia when they want a lighter API client with a simpler workflow and less overhead for everyday debugging.

Pros

🟢Clean, lightweight interface
🟢Strong support for REST, GraphQL, and gRPC
🟢Good for individual developers and small teams

Cons

🔴Less comprehensive collaboration and governance than Postman
🔴Smaller ecosystem of integrations
🔴Some advanced team features require paid plans

0 builders switched

Go to Insomnia

S

SwaggerHub

Alternative to Postman

SecurityB

7.8/10

Rep Score: 820 Saves

SubscriptionEnterpriseCloud/SaaSProprietary commercial software

Plays nice with

GitHubGitLabSlackJiraAzureAWS

Best forTeams that prioritize API design, documentation, and governance around OpenAPI.

Commercial subscription pricing with team and enterprise plans; pricing typically scales by users and API governance needs.

Summary

An API design and documentation platform built around the OpenAPI specification, with collaboration and governance features for API-first teams.

Why Switch

Teams switch from Postman to SwaggerHub when they need a stronger OpenAPI-centered platform for design-first API collaboration and governance.

Pros

🟢Strong OpenAPI-first workflow
🟢Useful for API design, documentation, and governance

Cons

🔴Less suited to ad hoc manual API testing than Postman
🔴Can feel opinionated around OpenAPI-centric processes

0 builders switched

Go to SwaggerHub

S

SwaggerHub

Alternative to Postman

SecurityB

7.8/10

Rep Score: 820 Saves

SubscriptionEnterpriseCloud/SaaSProprietary commercial software

Plays nice with

GitHubGitLabSlackJiraAzureAWS

Best for

Teams that prioritize API design, documentation, and governance around OpenAPI.

Cost

Commercial subscription pricing with team and enterprise plans; pricing typically scales by users and API governance needs.

Summary

An API design and documentation platform built around the OpenAPI specification, with collaboration and governance features for API-first teams.

Why Switch

Teams switch from Postman to SwaggerHub when they need a stronger OpenAPI-centered platform for design-first API collaboration and governance.

Pros

🟢Strong OpenAPI-first workflow
🟢Useful for API design, documentation, and governance
🟢Good fit for contract-driven development

Cons

🔴Less suited to ad hoc manual API testing than Postman
🔴Can feel opinionated around OpenAPI-centric processes
🔴Pricing may be higher for larger teams

0 builders switched

Go to SwaggerHub

KP

Katalon Platform

Alternative to Postman

SecurityB

7.1/10

Rep Score: 740 Saves

SubscriptionEnterpriseDesktop and cloud servicesProprietary commercial software

Plays nice with

GitHubJiraSlackAzureAWSSalesforce

Best forQA and DevOps teams that want API testing as part of a larger automation suite.

Commercial subscription with free and trial options; enterprise pricing depends on scale, execution needs, and support requirements.

Summary

A test automation platform that includes API testing alongside web, mobile, and desktop testing for QA and DevOps teams.

Why Switch

Teams switch from Postman to Katalon Platform when they need API testing inside a broader automated testing suite for QA and CI workflows.

Pros

🟢Combines API testing with broader test automation
🟢Good for QA teams standardizing on one platform

Cons

🔴Broader than a dedicated API client, so it may be heavier than needed
🔴Less focused on manual API exploration than Postman

0 builders switched

Go to Katalon Platform

KP

Katalon Platform

Alternative to Postman

SecurityB

7.1/10

Rep Score: 740 Saves

SubscriptionEnterpriseDesktop and cloud servicesProprietary commercial software

Plays nice with

GitHubJiraSlackAzureAWSSalesforce

Best for

QA and DevOps teams that want API testing as part of a larger automation suite.

Cost

Commercial subscription with free and trial options; enterprise pricing depends on scale, execution needs, and support requirements.

Summary

A test automation platform that includes API testing alongside web, mobile, and desktop testing for QA and DevOps teams.

Why Switch

Teams switch from Postman to Katalon Platform when they need API testing inside a broader automated testing suite for QA and CI workflows.

Pros

🟢Combines API testing with broader test automation
🟢Good for QA teams standardizing on one platform
🟢Supports enterprise testing workflows

Cons

🔴Broader than a dedicated API client, so it may be heavier than needed
🔴Less focused on manual API exploration than Postman
🔴Can be more complex to adopt for API-only use cases

0 builders switched

Go to Katalon Platform