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Postman alternatives

Postman is in the CheckOps directory. The tools below cover similar ground, based on shared categories and practice tags already recorded on CheckOps. Links go only to CheckOps pages. This is not a paid list and not an official alternatives program.

Postman on CheckOps · Go faster from development to production with higher accuracy and fewer tokens.

How we picked

CheckOps is a genuine and free directory. There are no paid sponsors, featured listings, or paid placement on these pages. The shortlist is built from tools already in the directory whose tags match the topic, with a preference for entries that have a fuller CheckOps page so the facts in the table can be checked against the source essay. This is not a claim that one tool is objectively better than another, and it is not a paid ranking.

Alternatives start with any manual list on the Postman page, then add tools that share first-class categories and practice tags, preferring fuller essays. The list is capped at 15 tools for this page.

Alternatives

  1. K

    1. Karate

    Test Automation Made Simple.

    Read the CheckOps page · Compare with Postman · Open source

  2. J

    2. JMeter

    Apache JMeter open-source load testing tool for analyzing and measuring the performance of a variety of services.

    Read the CheckOps page · Compare with Postman · Open source

  3. P

    3. Pact

    Fast, easy and reliable testing for integrating web apps, APIs and microservices.

    Read the CheckOps page · Compare with Postman · Open source

  4. B

    4. Bruno

    Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia).

    Read the CheckOps page · Compare with Postman · Open source

  5. W

    5. WireMock

    A tool for mocking HTTP services.

    Read the CheckOps page · Compare with Postman · Open source

  6. K

    6. Katalon Studio

    Start API testing from today with Katalon.

    Read the CheckOps page · Compare with Postman · Commercial, with a free or trial tier tagged

  7. I

    7. Insomnia

    The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC.

    Read the CheckOps page · Compare with Postman · Open source

  8. S

    8. SoapUI

    SoapUI is a free and open source cross-platform functional testing solution for APIs and web services.

    Read the CheckOps page · Compare with Postman · Open source

  9. H

    9. Hoppscotch

    Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia.

    Read the CheckOps page · Compare with Postman · Open source

  10. R

    10. RestSharp

    Simple REST and HTTP API Client for .NET.

    Read the CheckOps page · Compare with Postman · Open source

  11. H

    11. Hurl

    Hurl is an Apache-2.0 command-line tool, written in Rust on libcurl, that runs and tests HTTP requests defined in plain text files, with captures, assertions and JUnit, TAP, HTML and JSON reports.

    Read the CheckOps page · Compare with Postman · Open source

  12. S

    12. Scalar

    Scalar is an MIT-licensed open-source API platform built around OpenAPI: an interactive API reference with generated code examples, an offline-first API client and hosted docs, now positioned as infrastructure for APIs in the age of agents.

    Read the CheckOps page · Compare with Postman · Open source, with commercial options tagged

  13. R

    13. Requestly

    Requestly is a Git-native API client and HTTP interception tool, now part of BrowserStack, for designing, testing and mocking APIs and modifying browser traffic; AGPL-3.0 with a free plan.

    Read the CheckOps page · Compare with Postman · Open source

  14. V

    14. Voiden

    Voiden is an Apache-2.0, offline, Git-native API workspace where requests, tests and docs live in plain-text .void Markdown files built from reusable blocks, with no accounts, telemetry or cloud lock-in.

    Read the CheckOps page · Compare with Postman · Open source

  15. H

    15. httpYac

    httpYac is an MIT-licensed CLI and VS Code extension that runs `.http` and `.rest` files, sending REST, SOAP, GraphQL, WebSocket and gRPC requests with assertions and scripting.

    Read the CheckOps page · Compare with Postman · Open source

Comparison

License, pricing model, and languages or platforms are taken from tags on each CheckOps page. Pricing notes are a short excerpt from that page's Pricing section when one exists. A blank or "not stated" cell means the CheckOps page does not record it.

Postman and alternatives
ToolLicensePricing modelLanguages / platformsPricing notes
PostmanCommercial, with a free or trial tier taggedFree tier, Paid, SaaSNot stated in the tags on the CheckOps pagePostman offers a variety of pricing plans to cater to different user needs: Free Plan: Includes core features, limited collaboration, and basic monitoring capabilities.
KarateOpen sourceFree, Open sourceNot stated in the tags on the CheckOps pageKarate is an open-source tool released under the MIT license, which means it is free to use for both commercial and non-commercial purposes.
JMeterOpen sourceFree, Open sourceNot stated in the tags on the CheckOps pageAs an open-source tool, Apache JMeter is completely free to use. There are no licensing fees, subscription costs, or premium features to pay for, making it an attractive option for organizations and individuals looking…
PactOpen sourceFree, Open sourceJava, Ruby, Node, Dot Net, Golang, Scala, Kotlin, Php, Javascript 2PactFlow offers several pricing tiers, including a free tier that’s ideal for small teams getting started with contract testing.
BrunoOpen sourceFree, Open sourceNot stated in the tags on the CheckOps pageBruno is an open-source tool, which means it is free to use. There are no licensing fees or subscription costs associated with using Bruno, making it an excellent option for organizations looking for a cost-effective…
WireMockOpen sourceFree, Open sourceNot stated in the tags on the CheckOps pageWiremock is open-source software, making it free to use under the Apache 2.0 license.
Katalon StudioCommercial, with a free or trial tier taggedFree tier, Paid, SaaSNot stated in the tags on the CheckOps pageKatalon Studio offers a tiered pricing model to cater to different needs: Free Edition: Provides essential features for small teams and individual users, including basic API, web, and mobile testing capabilities.
InsomniaOpen sourceFree, Open sourceNot stated in the tags on the CheckOps pageInsomnia offers different pricing tiers to accommodate various needs: Free Version: The open-source version of Insomnia is free to use, providing access to core features suitable for individual developers and small…
SoapUIOpen sourceFree, Open source, Free tierNot stated in the tags on the CheckOps pageSoapUI offers both a free version and a Pro version (SoapUI Pro), known as ReadyAPI, which includes additional features and advanced capabilities: SoapUI Open Source: Free to use and includes core features for basic…
HoppscotchOpen sourceFree, Open sourceNot stated in the tags on the CheckOps pageNot stated in a Pricing section.
RestSharpOpen sourceFree, Open sourceDot NetRestSharp is an open-source library, which means it’s available for free to developers and organizations.
HurlOpen sourceFree, Open sourceRustHurl is free and open source under the Apache-2.0 licence.
ScalarOpen source, with commercial options taggedOpen source, Free tier, PaidTypescriptScalar's open-source packages are free (MIT). Managed hosting has a free tier (publish references on an apidocumentation.com subdomain with SSL) and paid plans for teams.
RequestlyOpen sourceOpen source, Free tierNot stated in the tags on the CheckOps pageFree for up to 10 collaborators according to the README; paid and enterprise plans available. See site.
VoidenOpen sourceFree, Open sourceTypescriptVoiden is free and open source under the Apache-2.0 licence.
httpYacOpen sourceFree, Open sourceJavascripthttpYac is free and open source under the MIT licence.

FAQ

Are these official Postman alternatives?
No. These are other tools on CheckOps that cover similar ground to Postman, based on shared category and practice tags. They are not an official list and not a paid placement.
How are the alternatives chosen?
The same method as the Alternatives block on each tool page: manual slugs from the CheckOps entry when they exist, then automatic ranking by shared categories and practice tags, with a preference for fuller essays. This page shows a longer list than the tool page.
Do the links go to vendor sites?
The alternatives themselves link only to CheckOps tool pages. Each of those pages may also list the vendor website.
Can I compare them side by side?
Yes. Use the compare links on this page, or the compare tool at /tools/compare, which reads the same directory facts.