Restretto Alternatives

Apps similar to Restretto include Bruno, which is open source with a free version. Other options are Postman, Insomnia REST Client, Yaak and Hoppscotch. API Clients like Restretto are a crowded field, with more than 50 alternatives for Mac, Windows, Linux, the web and Chrome OS.

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Restretto alternatives page was last updated Mar 14, 2026

Talend API Tester
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Talend API Tester makes it easy to invoke, discover and test HTTP and REST APIs.
Cost / License
Free
Proprietary
Application type
HTTP Client
Platforms
Google Chrome
+3
Good alternative?Is Talend API Tester a good alternative to Restretto?
API Dash
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API Dash is a beautiful open-source cross-platform API Client built using Flutter which can help you easily create & customize your API requests, visually inspect responses and generate API integration code. A lightweight alternative to postman/insomnia.
Cost / License
Free
Open Source (Apache-2.0)
Application typeApplication types
API Client
HTTP Client
Platforms
Windows
Mac
Linux
Debian
Ubuntu
Linux Mint
Fedora
Red Hat Enterprise Linux
CentOS
Good alternative?Is API Dash a good alternative to Restretto?
Guide API
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API integration platform for testing, prototyping, and running of any API flow. The right tool for successful API flow integration - nice, easy, simple, and cheap.
Cost / License
Paid
Proprietary
Origin
United Kingdom
Platforms
Online
Software as a Service (SaaS)
United Kingdom
Good alternative?Is Guide API a good alternative to Restretto?
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NativeRest
Native desktop app for Windows offers high-performance REST and HTTP API testing, low memory and CPU use, custom methods, portable version, proxy support, multiple environments, code generation, multilingual interface, and import...

https://nativesoft.com
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Humlix
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Humlix shows you an easy way of generating tests for your web APIs. All you need to do is create a test request using the test request builder within Humlix and give an example of how your endpoints look and what type of data they want.
Cost / License
Free
Proprietary
Application type
API Client
Platforms
Mac
Windows
Linux
Good alternative?Is Humlix a good alternative to Restretto?