Dev tools · alternatives · 2026
24 alternatives to Mayhem for API
Automated REST API testing to find bugs in minutes
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mayhem for API launched in 2021; newer entries below may have overtaken it.
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Apidog▲570Development teams often struggle with using multiple tools like Postman and Swagger for API design, development, and testing. This fragmented approach leads to outdated API specs and chaotic collaboration. So we built Apidog: a single, unified API platform for team collaboration. It has a beautiful interface that makes it easy to create API spec, generate request data from API spec, validate responses, create mock data, orchestrate test scenarios, and publish API documentation. Apidog = Postman + Swagger + Mock + JMeter.
2024 · apidog.com · its alternatives →
- 2
Automagically reverse-engineer REST APIs via capturing traffic - alufers/mitmproxy2swagger
2022 · github.com · its alternatives →
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APIEval-20▲121An open benchmark for AI agents that test APIs
May 2026 · resources.kusho.ai · its alternatives →
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Fern▲260We built the world’s first generated, idiomatic gRPC and REST SDK. If you have public gRPC and REST endpoints, Fern is the SDK provider for you.
2025 · buildwithfern.com · its alternatives →
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API Tracker▲290IMDB for APIs, the world's biggest API search engine
2022 · apitracker.io · its alternatives →
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API to classify & protect sensitive data in any application
2021 · firewallforai.com · its alternatives →
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Hi, this is Mish and Sebastian. We are working on Step CI - a fully automated API testing platform for developers. Step CI works programming-language independent and for different API paradigms (REST, GraphQL, XML). Our CLI and test runner are available on GitHub (https://github.com/stepci) under the MPLv2 license. Since our last launch, Step CI is now able to generate automated tests for your API based on your OpenAPI (Swagger) spec. This saves you a lot of time as you never have to write and maintain your tests again! We would like to invite you to try our tool and give us…
2022 · stepci.com · its alternatives →
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Free online tool to test APIs and autogenerate documentation
2018 · swagger.io · its alternatives →
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API Radar▲77We built API Radar to track exposed API keys from OpenAI, Claude, Gemini, and other major providers—in real time—from public GitHub repositories. Why? Leaked AI keys are everywhere. They power bots, cost companies thousands, and even expose user data. But no one had a clean dashboard to see the leaks as they happen — until now. What you’ll find: Full redacted + raw API key leaks Real-time feed of exposed repos Leaderboards by author, repo, and provider Filtering by provider (OpenAI, Claude, Gemini, etc.) Timeline of key exposure trends Built for security researchers, devs, and AI companies…
Jan 2026 · apiradar.live · its alternatives →
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Your playground for writing custom API security tests
2023 · akto.io · its alternatives →
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Routebase▲106Design, mock, test, and document APIs from one living spec. Full test runner built in: suites, scenarios, ten auth schemes, CLI in CI. No OpenAPI needed.
Jul 2026 · routebase.dev · its alternatives →
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InterimAPI▲68Custom API endpoints with realistic fake data in seconds
2022 · interimapi.com · its alternatives →
- 17
Powerful tool for API flow integration, testing, prototyping
2020 · its alternatives →
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APImetrics▲72Simple, powerful, secure API performance monitoring
2021 · apicontext.com · its alternatives →
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TestMagic▲53AI-powered API test automation. Save 90% of testing time
2025 · irual.me · its alternatives →
- 20QG
- 21OS
tl;dr we released openapi.security, an online tool that performs a dozen of security tests on any given openapi/swagger-based API, with no signup or email required. You can try it here: https://openapi.security My team at Escape (YC W23) is mainly focused on securing GraphQL APIs. For this, we developed a new approach called Feedback driven API Exploration. Basically, we infer the right security tests cases to run using the specification and a carefully crafted in house graph traversal algorithm. (It's a bit long to describe here but we published a more in depth explanation of…
2023 · openapi.security · its alternatives →
- 22MS
2018 · mocktastic.com · its alternatives →
- 23
Stop half-done APIs! Cherrybomb is a CLI tool that helps you avoid undefined user behaviour by auditing your API specifications, validating them and running API security tests. - blst-security/cherrybomb
2022 · github.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →