Best Postman Alternatives: 25+ API / REST Development tools

Insomnia REST Client

Debug APIs like a human, not a robot. Insomnia is a simple yet powerful REST API Client with cookie management, environment variables, code generation, and authentication for Mac, Window, and Linux.

• The features are almost the same with postman. Guest • Aug 2017 • 5 agrees and 1 disagrees Disagree   Agree
• Very Light and Fast. Really recommended sekti92 • Sep 2016 Disagree   Agree
• Very easy to use. Clean interface. Guest • Mar 2017 Disagree   Agree
• Request chaining, test scripting and setting up environment variables are still in an experimental stage. Postman offers these features out of the box in a well designed and elegant way. Guest • Oct 2017 • 1 agrees and 9 disagrees Disagree   Agree

Freemium $ $ $ Open Source Mac Windows Linux

45 Like

Paw

Easily craft your HTTP requests, try them, archive them. Setup HTTP Headers, URL parameters, form-encoded POST key-values or text. Get easy-to-read responses with well formatted headers and body. Sync your projects with your team through Paw for Teams.

• Simple request chaining (right-click in the UI, no code or globals); Great workflow for when writing a fast-changing API Guest • Jun 2017 • 2 agrees and 0 disagrees Disagree   Agree
• Superb flexibility and cookie handling. An entire session with transactions can be constructed in Paw with it's ability to parse incoming data and extract potions for the next request. Guest • Feb 2017 • 2 agrees and 1 disagrees Disagree   Agree
• Handles cookies *way better* than Postman malternative • Mar 2016 • 0 agrees and 1 disagrees Disagree   Agree

Commercial $ $ $ Mac

27 Like

soapUI

Eviware, the maker of soapUI, Web Service Testing Leader soapUI is a tool for functional testing, mainly of web services like SOAP based web services and RESTful web services, but also HTTP based services and JMS Services as well as databases. soapUI is an open source and completely free tool with a commercial companion, soapUI Pro, with extra functionality for companies with mission critical web services.

Free Open Source Mac Windows Linux

39 Like

HTTPie

httpie - HTTPie is a CLI, cURL-like tool for humans. HTTPie (pronounced aych-tee-tee-pie) is a command line HTTP client. Its goal is to make CLI interaction with web services as human-friendly as possible. It provides a simple http command that allows for sending arbitrary HTTP requests using a simple and natural syntax, and displays colorized responses. HTTPie can be used for testing, debugging, and generally interacting with HTTP servers.

Free Open Source Mac Windows Linux

25 Like

Advanced REST Client (ARC)

Cross platform API testing Use ARC on any major platforms including Windows, MacOS and Linux. Simplicity Easy and clean user inteface helps you make test request faster. Works with Google Drive Store your requests and projects on Google Drive and share it with your team. More data then other tools ARC implements it’s own HTTP client that works directly on a socket. As a result you receive detailed information about request timings, redirects and even sent HTTP message body.

Free Open Source Mac Windows Linux Chrome OS Chrome ... Chromium Chrome Web Store

17 Like

HttpRequester

HttpRequester is a tool for Firefox for easily making HTTP requests (GET/PUT/POST/DELETE), viewing the responses, and keeping a history of transactions. This tool is useful when doing web or REST development, or when you need to make HTTP requests that are not easily done via the browser (PUT/POST/DELETE).

Free Open Source Mac Windows Linux Firefox

5 Like

RESTer

A REST client for almost any web service (Firefox and Chrome extension).

• Amazing interface, integrates very well in Firefox, prettyfies the code… What else? Guest • Sep 2018 Disagree   Agree

Free Open Source Mac Windows Linux Chrome Firefox

4 Like

RESTClient

RESTClient can be used to test variety of HTTP communications and RESTful webservices. Friendly GUI, rich functionalities.

Free Open Source Mac Windows Linux

6 Like

StopLight

APIs are essential to every online business. StopLight helps companies manage their API lifecycle. Our visual modeling solution removes the massive amount of manual effort needed today, and instead reduces friction, and improves efficiency, across all API stakeholders.

• simple ui get the response..!!!! Guest • Apr 2017 Disagree   Agree

Free Personal $ $ $ Mac Windows Linux Web

11 Like

Graphical HTTP Client

HTTP Client is a Mac OS X Leopard developer tool for debugging HTTP services by graphically creating and inspecting complex HTTP messages.

Commercial Mac

4 Like

Nightingale REST API Client

Nightingale is a fullly functional REST API Client built exclusively for Windows 10. It's fast, it's fluently designed, and it won't hog your resources. Submit GET, POST, PATCH, and other HTTP requests to your web service to test your RESTful APIs. Open the collection runner to send a batch of requests. Add tests to your request to ensure your APIs are running properly. Quickly open your previous workspace using Windows 10 Timeline.

• It's faster than Postman and it uses less resources. bittergrapefruit6 • Dec 2018 Disagree   Agree
• Nightingale is super fast and simple to use. It's highly optimized for Windows 10 Guest • Dec 2018 Disagree   Agree

Freemium $ $ $ Windows

1 Like

RESTtest

RESTtest is a simple yet intuitive way to test RESTful web services and standard HTTP calls. RESTtest allows you to enter a HTTP request body and any necessary headers. After the request is submitted, response information can be both viewed and saved to disk. Features include the ability to have multiple windows open at the same time, save requests for playback later, and exporting HTTP responses to disk.

Commercial $ $ $ Mac

1 Like

GraphicalHttpClient

Graphical Http Client is a utility to help you test and interact with REST-based web services.

Commercial $ $ $ Mac

1 Like

HttpMaster

HttpMaster is a professional development and test tool for web applications, with special focus on REST web services and web API applications. Key features: - HttpMaster project to store complete definition of API calls in one single place. - Broad set of http properties (HTTP headers, URL encoding, etc.). - Dynamic parameters to simulate variations of input data or create global API values. - Response data validation with logical expressions.

Freemium Windows

6 Like

HTTP Toolkit

HTTP Toolkit is a beautiful, cross-platform & open-source HTTP(S) debugging proxy, analyzer & client, with built-in support for modern tools from Docker to Android to GraphQL. Setup with one click to start seeing exactly what your code is sending. Diff requests or responses, and explore overall metrics, to understand in depth. Change live traffic content, and simulate errors or performance problems to test your system.

Free Open Source Mac Windows Linux Web

2 Like

RESTed

RESTed allows developers to quickly format and make HTTP requests and view the response. RESTed supports both basic HTTP authentication and OAuth. RESTed shows you the response header and response data. XML and JSON responses can even be spruced up automatically.

Commercial $ $ $ Mac

1 Like

Restlet

Visually create and execute single API requests as well as complex scenarios. Automate the execution of your API tests and scenarios with our CI/CD plugin. Restlet Client is the most popular REST client available as a Chrome extension. It automatically updates itself, can be opened in one or several browser tabs and comes with a convenient browser toolbar icon.

Commercial $ $ $ Mac Windows Linux Chrome OS Chrome

0 Like

Requester

Powerful, modern HTTP / REST client for Sublime Text. Requester has an expansive feature set, modern UX, powerful, elegant syntax and first class support for API testing and test automation. It runs on macOS, Windows and Linux.

Free Open Source Mac Windows Linux

3 Like

apptalk.ninja

apptalk.ninja is a great, easy-to-use tool for app developers tackle that monitors and debugs issues with their apps’ communication over-the-air. apptalk.ninja gives developers superhuman ninja powers to see what’s going on in their users’ pockets, on each and every device that used their app around the globe. Testing and enhancing communication speed and security also becomes much easier. Being an apptalk.

Freemium iPhone iPad

10 Like

Httper

Test RESTful APIs on android.

Free Android iPhone iPad

1 Like

Assertible

Assertible is the easiest way for teams and individuals to test and monitor web services. Gain confidence in crucial infrastructure by using Assertible's automated QA tools to test and monitor your web services across deployments and environments. With modern and easy-to-use assertions, you can validate virtually any web service, run your tests on any environment, and integrate with your CI or deployment pipeline. Save time and get your job done faster by automating your QA with Assertible.

Freemium Mac Windows Linux Web

4 Like

Windows RestClient

A Simple Windows application to help developers debug REST based services.

Free Open Source Windows

API Fortress

Automated API testing for the entire lifecycle. No coding, web-based, actually works.

Commercial Web Self-Hosted

1 Like

Servistate

Send HTTP Requests Build HTTP requests through an easy-to-use visual editor. Easily define query parameters, request headers and post data. Code editor included. Inspect Response Parse and visualize HTTP responses. Prettify HTML, XML and JSON. Expand / collapse, search & navigate into JSON data. Measure Performance Automatically track standard response metrics such as request time, status code and success rate. Monitor response stats real time.

Free Web Chrome

1 Like

FRequest

FRequest is an HTTP client that aims to provide a similar interface to an integrated development environment program (IDE) but for HTTP(s) apis. It should be fast, cross platform, lightweight, practical with a native look. Also it is important that project files can be easily shared and work seamless with Version Control Systems (VCS) for collaborative work.

Free Open Source Mac Windows

0 Like