Dev tools · alternatives · 2026

24 alternatives to ALT - API Load Test without fuss

The easiest JMeter & k6 alternative for API load testing. No scripting required. Test REST APIs and get p90/p95/p99 metrics. Import Postman collections.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Load-test.io▲99

   Website load testing made easy

   2021 · its alternatives →

2. 2
   Mock API Generator▲555

   Generate custom data & API to build apps in less than 30s

   2021 · retool.com · its alternatives →

3. 3
   API Tester▲209

   The easiest way to test APIs

   2017 · its alternatives →

4. 4
   K6 – developer-centric load testing using Go and JavaScript▲101

   k6 is an open-source tool and cloud service that makes load testing easy for developers and QA engineers.

   2017 · k6.io · its alternatives →

5. 5
   API_TESTER▲249

   Test your APIs right from the macOS menu bar

   2025 · apps.apple.com · its alternatives →

6. 6LA
   Loadjitsu – a modern load testing alternative to JMeter▲67

   Please meet Loadjitsu, my weekend project, years in the making. Over the years while building different apps and sites, I always felt that I need a modern load testing software.Tools like JMeter, ab are not very easy to use and it seems innovation in load testing which is a crucial part of any software release cycle has been ignored. This is my third attempt at making Loadjitsu, I am so glad that I can finaly release this. A bit more about the software 1. Powered by golang you can run load tests for tens of thousands of connections per second on very average hardware. 2. Cross platform, run…

   2022 · loadjitsu.com · its alternatives →

7. 7
   ApiHome▲73

   Home of API testing

   2022 · apihome.io · its alternatives →

8. 8
   Postman▲182

   Postman is a powerful HTTP client to test REST API

   2014 · postman.com · its alternatives →

9. 9
   Loader.io▲117

   Simple cloud-based load testing for your apps

   2014 · loader.io · its alternatives →

10. 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. 11
    MockAPI Dog▲122

    Instant mock REST & LLM APIs - free, no signup required

    Feb 2026 · mockapi.dog · its alternatives →

12. 12
    req▲71

    A lightweight, minimal yet powerful API testing tool

    2022 · npmjs.com · its alternatives →

13. 13
    API Explorer▲7

    Test, document, and optimize apis effortlessly

    2025 · apiexplorer.vercel.app · its alternatives →

14. 14
    Instant Load Test▲3

    Simple load testing for websites and APIs

    Jul 2026 · freeloadtest.com · its alternatives →

15. 15
    A Simple Load Testing CLI Built in Go▲9

    There are plenty of good tools for load testing such as JMeter, Minigun, and plenty more - but they all have their own set of options to learn. I built this one to support a simpler workflow where you just paste your curl request (or other cli command) after your `spam` config (literally just `spam -r 2 -- curl www.google.com). It's pretty barebones but I'm 100% going to use it in my day to day - figured I'd share it here if it helped anyone else!

    2023 · github.com · its alternatives →

16. 16
    Declarative Testing Framework for REST, GraphQL APIs▲45

    :boom: Test REST, GraphQL APIs. Contribute to kiranz/just-api development by creating an account on GitHub.

    2018 · github.com · its alternatives →

17. 17
    Testing REST, GraphQL APIs▲14

    :boom: Test REST, GraphQL APIs. Contribute to kiranz/just-api development by creating an account on GitHub.

    2018 · github.com · its alternatives →

18. 18
    MockREST – Create REST APIs from Your JSON Content▲12

    Mock REST endpoints in seconds. Test without backend delays. Built for developers who need reliable mock data now.

    2017 · mockrest.com · its alternatives →

19. 19
    Roley▲26

    API Testing tool built for Teams

    May 2026 · roley.io · its alternatives →

20. 20
    LoadLynx▲14

    SaaS Testing Boilerplate

    2024 · its alternatives →

21. 21IM
    I made a platform to load and performance test API's▲30

    I built BuzzBench because I was frustrated with how complex performance testing tools have become. And I was ending up writing my own scripts to test endpoints and manually check out resource usage at the time of testing. Checkout demo: https://www.youtube.com/watch?v=yAnbZMoQvmQ

    2025 · buzzbench.io · its alternatives →

22. 22
    Apicat – A Lightweight Offline Postman Alternative▲13

    Apicat is the ultimate offline Postman alternative that stores your .http files locally. It’s Git-friendly, open-source, and highly compatible with Postman. Test APIs offline with this powerful free offline API client designed for developers who need a reliable local API testing tool.

    2025 · apicat.com · its alternatives →

23. 23
    REST api testing made easy!▲2

    Powerful declarative API testing that works for you!

    2019 · its alternatives →

24. 24
    Mock API Generator▲17

    API Mocks Prototyping

    2020 · mock-api-builder.vercel.app · its alternatives →

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 →