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SoapUI alternatives: 6 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave SoapUI: dated, heavy Java interface, and steep learning curve. We ranked 6 alternatives by how directly each one replaces SoapUI, then by reviews, real visits and how recently each app's facts were checked against its own website. Karate currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Karate logoKarateOpen sourceYesWindows, macOS, Linux4 of 462.6
2Insomnia logoInsomniaOpen sourceYesWindows, macOS, Linux3 of 357.5
3Hurl logoHurlOpen sourceYesLinux, macOS, Windows4 of 453.6
  1. Karate logo

    1. KarateTop pick

    Best for: QA engineers and developers who want readable, automated API tests in CI

    Open sourceWindows, macOS, Linux

    62.6

    score / 100

    Why switch from SoapUI

    Open-source API test automation with readable scripts and parallel runs.

    Pros

    • Readable tests without step definitions
    • API, UI, mocks and performance in one framework
    • Parallel test runs
    • Free, MIT-licensed core

    Cons

    • Not an interactive request client
    • Java toolchain can feel heavy
    • Some tooling only in paid editions
    Visit Karate Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Karate a good SoapUI alternative?

    Verified facts

    4 of 4 verified
    License
    MIT
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Test types
    API, UI, performance, mocks
    Checked Oct 25, 2026docs.karatelabs.io(opens source in a new tab)
    Parallel runs
    Yes
    Checked Oct 25, 2026docs.karatelabs.io(opens source in a new tab)
    Enterprise hosting
    Runs on your machines
    Checked Oct 25, 2026karatelabs.io(opens source in a new tab)
  2. Insomnia logo

    2. Insomnia

    Best for: Developers who want an open-source desktop API client

    Open sourceWindows, macOS, Linux

    57.5

    score / 100

    Why switch from SoapUI

    A lighter desktop client with good SOAP-free REST and GraphQL support.

    Pros

    • Open source
    • Local, Git or cloud storage
    • Clean interface

    Cons

    • Account prompts in recent versions
    • Collaboration needs paid plans
    Visit Insomnia Details and reviews
    How this score is calculated
    Editorial fit ×0.363
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Insomnia a good SoapUI alternative?

    Verified facts

    3 of 3 verified
    Open source
    Yes
    Checked Oct 24, 2026github.com(opens source in a new tab)
    Maker
    Kong
    Checked Oct 24, 2026insomnia.rest(opens source in a new tab)
    Free plan
    Yes
    Checked Oct 24, 2026insomnia.rest(opens source in a new tab)
  3. Hurl logo

    3. Hurl

    Best for: Developers who want readable, plain-text API tests that run in CI

    Open sourceLinux, macOS, Windows

    53.6

    score / 100

    Why switch from SoapUI

    Plain-text HTTP tests that run fast in CI.

    Pros

    • Plain-text files that diff well in Git
    • Assertions, captures and chained requests
    • Fast, built on libcurl
    • Free and open source

    Cons

    • No graphical interface
    • Text format to learn for complex flows
    • Not suited to exploring APIs interactively
    Visit Hurl Details and reviews
    How this score is calculated
    Editorial fit ×0.357
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Hurl a good SoapUI alternative?

    Verified facts

    4 of 4 verified
    License
    Apache-2.0
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Format
    Plain text
    Checked Oct 25, 2026hurl.dev(opens source in a new tab)
    Platforms
    Linux, macOS, FreeBSD, Windows
    Checked Oct 25, 2026hurl.dev(opens source in a new tab)
    Maintainer
    Orange
    Checked Oct 25, 2026github.com(opens source in a new tab)

The best SoapUI alternative for…

The highest-ranked app in this list for each need.

Karate logo

Best SoapUI alternative for most people

Karate

Open-source API test automation with readable scripts and parallel runs.

Insomnia logo

Best SoapUI alternative for a free option

Insomnia

A lighter desktop client with good SOAP-free REST and GraphQL support.

Katalon Studio logo

Best SoapUI alternative for a free plan you can upgrade

Katalon Studio

Codeless and scripted testing across API, web and mobile.

Hurl logo

Best SoapUI alternative for open source

Hurl

Plain-text HTTP tests that run fast in CI.

Apidog logo

Best SoapUI alternative for self-hosting

Apidog

Visual test scenarios, mocks and docs in one modern tool.

Postman logo

Best SoapUI alternative for Mac

Postman

A friendlier interface for REST testing with team collaboration.

Karate logo

Best SoapUI alternative for Windows

Karate

Open-source API test automation with readable scripts and parallel runs.

Karate logo

Best SoapUI alternative for Linux

Karate

Open-source API test automation with readable scripts and parallel runs.

Postman logo

Best SoapUI alternative for working in the browser

Postman

A friendlier interface for REST testing with team collaboration.

SoapUI alternatives: common questions

What is the best alternative to SoapUI?

Karate ranks first right now. Open-source API test automation with readable scripts and parallel runs. Katalon Studio and Postman follow it in our ranking.

Is there a free alternative to SoapUI?

Yes. Karate (open source), Katalon Studio (free plan + paid), Postman (free plan + paid) and Insomnia (open source) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to SoapUI?

Yes: Karate, Insomnia and Hurl.

Which SoapUI alternatives work on Linux?

Karate, Katalon Studio, Postman, Insomnia and Apidog run on Linux.

Why do people switch from SoapUI?

The complaints we hear most: dated, heavy Java interface; steep learning curve; many conveniences are only in paid ReadyAPI.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces SoapUI, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.