Dev tools · alternatives · 2026

24 alternatives to API Testing

testing

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. API Testing launched in 2024; newer entries below may have overtaken it.

1
API Tester▲209
The easiest way to test APIs
2017 · its alternatives →
2
API_TESTER▲249
Test your APIs right from the macOS menu bar
2025 · apps.apple.com · its alternatives →
3
HTTPie for Terminal 2.6.0▲119
Making APIs simple and intuitive for makers around the world
2021 · its alternatives →
4NW
New way to test APIs with OpenAPI and Postman▲80
2021 · github.com · its alternatives →
5
Apimint▲170
Design and Mock API + code SDK + Auto Documentation
2016 · its alternatives →
6OS
Open-source A/B testing framework▲199
2021 · github.com · its alternatives →
7
TestLeft▲82
Automate UI tests for web and desktop apps from any IDE
2018 · its alternatives →
8
Expect▲109
Let agents test your code in a real browser
Mar 2026 · expect.dev · its alternatives →
9IR
Intercept.rest – Faster API debugging▲89
Sharing an internal tool that accelerated my development work 10-fold, especially with API debugging. Thought fellow developers here might find it useful. As a developer, I often have trouble reproducing errors at the client end. https://intercept.rest lets me debug and monitor API requests and responses. It is similar to the Network tab in Chrome Developer Tools but works for any API: mobile apps, webhooks, frontend etc. After I shared it with a close circle of friends, they found it incredibly useful and even found new use cases, I never imagined. Been a long time lurker here and…
2018 · its alternatives →
10
ApiHome▲73
Home of API testing
2022 · its alternatives →
11
TestMace▲136
Work with an API and create automated tests without coding
2019 · its alternatives →
12
AbTest.io▲122
A free url shortener with A/B testing features
2017 · its alternatives →
13
Akto's Test Editor▲143
Your playground for writing custom API security tests
2023 · its alternatives →
14IO
I open sourced the CLI of my API Testing Framework▲16
2023 · github.com · its alternatives →
15OS
Open-source cypress for back end testing▲22
For the past few months we’ve been building a simple jest/typescript-based high-level language for writing and running integration tests. We're open-sourcing it now and are excited to share it with you: https://github.com/traceloop/jest-opentelemetry Why we built this: - There are many solid frameworks for FE / browser testing, but none with high-level constructs for testing BE flows - We were missing a way to validate side effects for complex backend systems, especially across async queueing systems Our beta version lets you send an API call to a system and…
2023 · github.com · its alternatives →
16
Reffresh▲91
Simple, no code, mock APIs
2024 · its alternatives →
17
apiJest▲2
API testing services
2023 · its alternatives →
18
Master Dev API▲6
Debug test & optimize your code instantly – all in one API🚀
2025 · mimi800-debug.github.io · its alternatives →
19RB
Rust built open-sourced CLI tool for API specification validation▲23
2022 · github.com · its alternatives →
20AT
APId – the API end to end testing framework has gone open source▲11
2020 · getapid.com · its alternatives →
21
Mini API Test▲14
Chrome web store
2025 · chromewebstore.google.com · its alternatives →
22
RequestBite Slingshot▲6
Not your average API client - FOSS, fast and local-first.
2025 · s.requestbite.com · its alternatives →
23GO
Generate OpenAPI from Your Tests▲16
2023 · github.com · its alternatives →
24ST
Simple tool to generate mock APIs for testing▲25
2024 · endpts.io · 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 →