Best REST Client Products in 2025

Online API testing tool for REST & SOAP APIs. Test your API by making API calls directly from your browser.

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.

Key Insomnia REST features:

User-Friendly Interface Support for Multiple Protocols Environment Management Custom Plugins and Themes

Open Source

The Collaboration Platform for API Development

Key Postman features:

User-Friendly Interface Collaboration Comprehensive Testing Tools Extensive API Documentation

Open Source

SoapUI Pro is one of the most prominent API testing platforms around, allowing developers to quickly prototype the functions of their apps and get them to market with little hassle.

Key soapUI features:

Comprehensive Testing User-Friendly Interface Extensive Protocol Support Scripting Capability

Pingdom is a website performance monitoring software.

Key Website Speed Test by Pingdom features:

User-Friendly Interface Detailed Performance Metrics Geographical Testing Visual Representation

Google Cloud Translation lets you dynamically translate between languages using pre-trained or custom ML models based on your content needs.

AWS CloudTrail is a web service that records AWS API calls for your account and delivers log files to you.

Key AWS CloudTrail features:

Comprehensive Logging Enhanced Security Compliance and Auditing Integration

DreamFactory is an API management platform used to generate, secure, document, and extend APIs.

Key DreamFactory features:

Ease of Use Automatic API Generation Wide Database Support Scalability

Open Source freemium