Dev tools · alternatives · 2026

24 alternatives to API Testing Services

Quality Redefined

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 Services launched in 2022; newer entries below may have overtaken it.

1
API Tester▲209
The easiest way to test APIs
2017 · its alternatives →
2
LambdaTest Accessibility Testing Suite▲354
Ensure web inclusivity & compliance with just a few clicks.
2025 · testmuai.com · its alternatives →
3
Sparrow▲331
The Open Source API Testing Tool For All Developers
2024 · sparrowapp.dev · its alternatives →
4
APIEval-20▲121
An open benchmark for AI agents that test APIs
May 2026 · resources.kusho.ai · its alternatives →
5
Refraction▲156
Generate unit tests, create docs and refactor code using AI.
2023 · its alternatives →
6DT
Declarative Testing Framework for REST, GraphQL APIs▲45
2018 · github.com · its alternatives →
7
TestMace▲136
Work with an API and create automated tests without coding
2019 · its alternatives →
8AT
APId – the API end to end testing framework has gone open source▲11
2020 · getapid.com · its alternatives →
9
APIUtility▲66
Product manager tool for API testing and bulk transformation
2023 · its alternatives →
10ML
Multiple – Load test any API with JavaScript and NPM packages▲38
Hey HN, I wanted a better load testing solution – so I built one with my team at Multiple. We just opened early access and would love to get your feedback. We created Multiple to solve three challenges with existing tools: 1. Limited scripting capabilities. XML or GUI-based scripting can only test basic scenarios. Existing code-based tools struggle with auth, generating synthetic data, and testing anything other than HTTP requests. We went with JavaScript for ease of use, versatility, and integration with existing developer workflows. 2. Cannot use existing libraries or code. Instead of…
2023 · app.multiple.dev · its alternatives →
11
RakAPIt▲63
API testing cloud service
2021 · its alternatives →
12RT
Reagent – Test APIs Declaratively▲9
2020 · github.com · its alternatives →
13
ApiHome▲73
Home of API testing
2022 · its alternatives →
14WB
We built a split testing library for React▲18
2016 · github.com · its alternatives →
15
req▲71
A lightweight, minimal yet powerful API testing tool
2022 · its alternatives →
16
REST api testing made easy!▲2
Powerful declarative API testing that works for you!
2019 · its alternatives →
17AT
Assertible – Test and monitor your production APIs▲6
2016 · assertible.com · its alternatives →
18RJ
Rethinking JavaScript Test Coverage▲8
2018 · medium.com · its alternatives →
19IO
I open sourced the CLI of my API Testing Framework▲16
2023 · github.com · its alternatives →
20UR
Use REST APIs? Test them!▲5
2015 · dareid.github.io · its alternatives →
21OS
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 →
22BF
Boilerplate for Node.js and TypeScript with Jest tests▲33
2017 · github.com · its alternatives →
23BA
Bernoulli – An A/B testing service that supports full stack development▲10
2014 · bernoulli.io · its alternatives →
24TR
Testing RESTful services▲13
2018 · medium.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 →