Dev tools · alternatives · 2026

24 alternatives to HammerUI

Simple REST API client

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. HammerUI launched in 2021; newer entries below may have overtaken it.

1. 1
   Hammer▲262

   The missing piece between ⌘+C ⌘+V

   2024 · its alternatives →

2. 2
   Hammerspoon▲142

   Powerful automation of Mac OS

   2019 · hammerspoon.org · its alternatives →

3. 3
   CheapUI▲122

   AI-powered UI component generator for web development

   2025 · its alternatives →

4. 4OS
   Open-source Postman alternative with type safety▲275

   Hello! This is Jeane and Samuel and we’re building RecipeUI. RecipeUI is an open source Postman alternative that uses TypeScript to statically type and autocomplete requests. We built this because current API tools don’t deal with the fact that some APIs are just painful to work with. For us, it’s usually error after error as we try to figure out how to properly form the first request. We recorded a demo to show you how TypeScript helps us autocomplete a request correctly. https://youtu.be/O_Mly_p-g5s How does our platform improve the developer experience? The analogy is…

   2023 · recipeui.com · its alternatives →

5. 5
   Hammer – Golang's Fluent Rest API Client▲8

   Contribute to ShaileshSurya/hammer development by creating an account on GitHub.

   2020 · github.com · its alternatives →

6. 6
   Hammer.js▲193

   Add touch gestures to your site

   2015 · hammerjs.github.io · its alternatives →

7. 7
   Docs by Hashnode▲700

   The gold standard for your API references and product guides

   2024 · hashnode.com · its alternatives →

8. 8
   Hammer – Golang's Fluent Rest API Client▲7

   Contribute to ShaileshSurya/hammer development by creating an account on GitHub.

   2020 · github.com · its alternatives →

9. 9
   Restfox – Open source lightweight alternative to Postman▲758

   Last time I posted this it didn't garner much interest. There have been lots of improvements and fixes since the last release. Quick list of features: - Workspaces - Tabs - Nested Folders - Lots of context menus - Response history - Plugins - Runs fully in the browser and runs offline if necessary - Chrome and Firefox extension to bypass CORS restrictions - Desktop builds for all platforms - GraphQL support - Import collections exported from Postman and Insomnia - Simple user friendly interface I built this because I love Insomnia but wanted a portable version that I could run in the…

   2022 · restfox.dev · its alternatives →

10. 10
    YoinkUI▲340

    Copy any webpage's UI with 1 click

    2025 · yoinkui.com · its alternatives →

11. 11
    HeroUI Chat▲811

    The easiest way to generate beautiful UIs

    2025 · heroui.chat · its alternatives →

12. 12
    Promptui – Rich UI elements for cli prompts in Go▲196

    Interactive prompt for command-line applications. Contribute to manifoldco/promptui development by creating an account on GitHub.

    2017 · github.com · its alternatives →

13. 13
    CraftUI▲231

    Instantly craft stunning UI components from prompts

    2024 · expireddomains.com · its alternatives →

14. 14
    We built a tool that automatically generates API tests▲108

    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 →

15. 15
    LangUI▲131

    Open source UI components tailored for your AI projects

    2023 · langui.dev · its alternatives →

16. 16
    TypeUI▲66

    Build better UI with AI

    Jul 2026 · typeui.sh · its alternatives →

17. 17
    RESTful Menu▲114

    A beautiful RESTful client right on the menu bar.

    2018 · its alternatives →

18. 18LA
    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 →

19. 19
    create-api.dev by Kong▲150

    Generate and share OpenAPI specs with AI

    2025 · api.dev · its alternatives →

20. 20
    Refi App▲124

    Open-source Firestore UI tool

    2021 · refiapp.io · its alternatives →

21. 21
    Nimbella▲91

    Simple serverless cloud for developers

    2020 · its alternatives →

22. 22KL
    kiUi – Lightweight auto-layout stylable UI toolkit▲136

    2015 · novembermonk.github.io · its alternatives →

23. 23
    SingUI – compose modern front end with pure vanilla JavaScript▲13

    2021 · stackblitz.com · its alternatives →

24. 24
    TagUI – Automate web interactions using different native languages▲31

    Fork of TagUI tuned for rpa package. Contribute to tebelorg/TagUI development by creating an account on GitHub.

    2017 · github.com · 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 →