Best Postman Alternatives

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.

Features:

• Lightweight
• Request Chaining
• Responsive design
• Separated workspaces
• Support environment variables
• Api
• API Management
• Cloud sync
• Code generation
• Configurable request timeout
• Developer Tools
• Electron based
• GraphQL
• GraphQL integration
• Import Curl commands
• Support for Keyboard Shortcuts
• Image Preview
• REST API
• SSL client certificates
• SVG Editors
• Variables
• Web Development

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.

HTTPie

HTTPie (pronounced aitch-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 output. HTTPie can be used for testing, debugging, and generally interacting with HTTP servers.

Features:

• Command line interface
• Web Testing

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.

Features:

• Full headers control
• Web tool
• Developer Tools
• Electron based
• REST API

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.

Features:

• Built in docs
• HTTP mocking
• One click interception
• OpenAPI integration
• Performance analysis
• Themes
• Debugger
• Developer Tools

RESTClient

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

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).

Features:

• Debugger
• Firefox Extensions
• REST API
• Web Development

RESTer

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

Features:

• Api
• API Management
• Google Chrome Extensions
• Firefox Extensions
• Project Organization
• Variables