
Postman
Insomnia REST
req
Rest Console
Testfully
Lightweight Chrome extension for API testing - No account needed. Test REST APIs, manage environments, export cURL commands.

Bootstrap
Materialize CSS
Semantic UI
UIKit
Tailwind CSS
Material UI
Bulma
The most advanced responsive front-end framework in the world

Which is more popular?
Based on our record, Foundation seems to be more popular. It has been mentioned 22 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | test-api.app | get.foundation |
| Pricing | — | |
| Company | Startup from the United States · 2025 | — |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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BEST & WORST NEW FOUNDATIONS
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Test API App and Foundation. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have no reviews of Test API App yet. Be the first one to post
The reason I picked Foundation for this list is its strong emphasis on creating responsive designs, a feature that many developers value in the era of mobile browsing. This framework differentiates itself with an...
Semantic, coherent, and fully customizable, the Foundation empowers developers to create designs that are not only visually appealing but also adaptable to various screen sizes. Starting with small devices, developers...
Not only this, but they also have ‘Foundation for Emails’, which is a framework to code responsive HTML emails. Hence, whenever you are looking for an alternative to Bootstrap, do give Foundation a try.
Recommendations tracked on public social media and blogs since March 2021.


Tracking Test API App since Dec 2025.
Foundation - The most advanced responsive front-end framework. - Source: dev.to / 8 months ago
Foundation is a mobile-first responsive front-end framework that provides a range of CSS and JavaScript components for creating websites quickly. It’s often seen as a competitor to Bootstrap, offering more flexibility and customization... - Source: dev.to / almost 2 years ago
Foundation: An easy-to-use, powerful, and flexible front-end framework for building web applications on any device. - Source: dev.to / almost 2 years ago
When comparing Test API App and Foundation, you can also consider the following products.

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Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.
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A modern responsive front-end framework based on Material Design
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A UI Component library implemented using a set of specifications designed around natural language
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