CheckOps
Xplorer
Xplorer by Karate Labs is a local-first API workbench that opens OpenAPI specs and Postman collections, runs requests with no sign-in and exports them to Karate feature files.
- Free tier
- Paid
- Desktop
- API Contract Testing
- API testing
- HTTP client
- API & contract testing
- Integration testing
Latest public signals
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Introduction
Xplorer comes from Karate Labs, the company behind the Karate test framework (Y Combinator W22). Like its other products, it runs on your own machines: nothing is hosted and nothing phones home.
You can open a spec from a file or URL, with docs, schemas, samples, search and problem detection free. A free Postman rail needs no sign-in: open, edit, send and run collections. The free Export to Karate turns a Postman collection, folder or request into a Karate feature file, a practical path from manual exploration to automated tests. Premium adds Try It with schema checks and Add to Collection.
Xplorer sits alongside Karate Core (open source), Karate Agent, an async protocol pack, Karate Enterprise and IDE plugins for IntelliJ and VS Code.
Launch and background: Xplorer’s Product Hunt page lists it as launched in 2025 by Karate Labs, which Y Combinator’s directory lists in its Winter 2022 batch.
Features
- Spec explorer: OpenAPI docs, schemas and samples.
- Postman rail: Run collections without sign-in.
- Export to Karate: Collections to feature files.
- Schema checks: Premium Try It.
- Local-first: Nothing hosted.
Pros
- Free core: Most features at $0.
Cons
- Karate-centric: Most value if you adopt Karate.
Usage and Links (Example)
- Install Xplorer.
- Open an OpenAPI spec or Postman collection.
- Export requests to Karate and run them in CI.
Resources:
Pricing
Xplorer’s core is $0, including the Postman rail and Export to Karate; Premium features such as Try It with schema checks are paid.
Recommended for?
- Teams moving from Postman to automated Karate tests.
Conclusion
Xplorer is a smooth bridge from manual API exploration to Karate automation.
Use the free export to bootstrap a test suite.
On CheckOps, Xplorer is filed under the API & contract testing and Integration testing stages. Related tools listed here include Karate, Postman, Insomnia, Bruno, Schemathesis and Rest-Assured. When comparing them, weigh the licence, the languages and platforms each supports, whether it is self-hosted or managed, and how cleanly it slots into your existing CI pipeline. Details on this page were checked against the official website, documentation and repository on 11 November 2026.
Compare
CheckOps pages that put Xplorer next to related tools. There is no paid placement on these lists.
Alternatives
Other tools on CheckOps that cover similar ground. Open a page, or compare one with Xplorer side by side.
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BBrunoOpensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia).Compare with Xplorer
SSchemathesisSchemathesis is an MIT-licensed property-based API testing tool that generates inputs from OpenAPI, GraphQL and gRPC schemas, chains stateful workflows and finds 500s, schema violations and validation gaps.Compare with Xplorer
RRest-AssuredJava DSL for easy testing of REST services.Compare with Xplorer