Karate vs Hoppscotch

Free tier available

From $19 per user/month (indicative, team plan)

Open source core; Karate Labs sells a commercial IDE and enterprise support separately.

Self-hosting the community edition is free. Paid plans add team workspaces and enterprise SSO.

The open-source framework is complete and free.

Free cloud tier and a fully functional self-hosted community edition.

Widely used

Karate Labs · since 2017

Established

Hoppscotch · since 2019

• One DSL covers functional API tests, mocks and load tests — rare consolidation.
• Powerful JSON matching that removes most assertion boilerplate.
• Non-Java testers can write meaningful tests.

• Nothing to install — genuinely useful for onboarding and for locked-down machines.
• Self-hosting is a single container, so internal deployment is trivial.
• Very light and fast.

• The custom DSL is another language to learn and cannot be refactored by an IDE.
• Debugging complex scenarios is harder than in plain code.
• The UI automation feature is far behind dedicated browser tools.

• Browser CORS restrictions require a proxy or the desktop agent for many real requests.
• Fewer advanced testing and mocking features than Postman.
• Smaller community.

Teams wanting API testing and mocking in one tool, including non-Java testers.

Teams that want a self-hosted, no-install internal API client.