19 Best SoapUI Alternatives in 2021

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Last Updated: 28 December 2020

SoapUI is a widely popular API testing tool. It allows you to test REST and SOAP protocols. It facilitates seamless integrations and reusability of scripts. However, load and work flow testing is difficult with SoapUI.

Here, is a list of top 20 API testing tools which are good enough to replace SoapUI. This list consists of paid and open-source tools with important features and the latest download link.

1) Test Mace

Test Mace is a modern powerful crossplatform tool for working with an API and creating automated API tests.

Creating and testing complex scenarios quickly.
Creating tests without actual programming.
Powerful autocomplete feature and highlighting of current variables values, functions etc.
A well-organized project structure and human-readable file format, which allow you to store your project in the version control system repo and review tests and scenarios.
Advanced JS support in the built-in code editor, including the autocomplete feature and static analyzer.
Flexibility. Evaluated expressions in any text field, even in the address bar or headers area.
Cloud synchronization.
CI/CD support.

2) Rest Console

HTTP client and Request visualizer and constructor API testing tool. It helps developers to build, debug and test RESTful APIS.

Features:

Construct POST or PUT body via raw input
Easy query parameters creation
Add custom headers through intuitive UI
Keyboard navigation and shortcuts

Download link: https://github.com/ahmadnassri/app-restconsole

3) Tricentis

Tricentis is a robust web services testing tool. Prominent API Testing features of Tricentis Tosca are –

It supports a wide array of protocols including HTTP(s) JMS, AMQP, Rabbit MQ, TIBCO EMS, SOAP, REST, IBM MQ,NET TCP
It integrates into the Agile and DevOps Cycle
It uses model-based test automation that makes script maintenance easy.
Enables end-to-end testing as API tests can be used across mobile, cross-browser, packaged apps, etc.

Tricentis’ 400+ customers include global names from the Top 500 brands such as ExxonMobil, HBO, Whole Foods, Toyota, Allianz, BMW, Starbucks, Deutsche Bank, Lexmark, Orange, A&E, Vantiv, Vodafone, Telstra and UBS.

Download link: https://www.tricentis.com/software-testing-tool-trial-demo/

4) Hippie-Swagger

Hippie-swagger is a tool for testing APIS. It supports a clear assertion syntax, for extending test behavior. It also allows clean printing reports.

Features:

It will fail test whenever swagger documentation is either erroneous or missing
Readable and accurate assertation messages
Validated parameters, request, response, pats, etc.

Download link: https://github.com/CacheControl/hippie-swagger

5) JMeter

JMeter is used for functional API testing which includes needed to test an API. It also has features which help to boost the performance of API testing.

Features:

It can be used for both static as well as dynamic resources performance testing
It supports replaying of test results
It can automatically work with CSV files. This helps test team to produce unique parameter values for API tests

Download link: http://jmeter.apache.org/

6) Rest-assured

It’s a popular framework to test REST services in Java.

Learn more about Rest-Assured

7) Airborne

Airborne is an API automation testing tool used for testing Rest APIs.

Features:

Airborne is a programming framework, so it has no user interface apart from the text file to create code
To use airborne, you just need to remember a few key methods in the toolset and some ruby and rspec fundamentals

Download link: https://github.com/brooklynDev/airborne

8) APIpray Inspector

Apiary allows monitoring the API during the design phase by capturing both request and response. It allows the user to write API blueprints and lets the user view them Apiary editor or Apiary.jo.

Features:

Role-based access control over API documents.
It allows to add and remove team members from API design projects
API Blueprint management dashboard

Download link: https://apiary.io/

9) Apigee

Apigee is a cross-cloud API testing tool. It allows the user to measure and test API performance, supports and build API using other editors like Swagger. It offers security and governance policies across all APIs.

Features:

Allows to design monitor, deploy, and scale APIs
Easily create API proxies from the Open API Specification and deploy them in the cloud
Identify performance issues by tracking API traffic, error rates, and response times

Download link: http://apigee.com/

10) vREST

vREST provides an online solution for automated testing, mocking, automated recording and specification of REST/HTTP APIs/RESTful APIs.

It provides an exhaustive tool to quickly validate your REST APIs
It delivers zero defect web applications with less effort in API testing
To validate your web application no skilled resources are required, and it can generate documentation for your API specifications
API mocks can be created in vREST with the help of Mock Server Functionality. User can directly start developing frontend using mock HTTP requests

Link to Vrest

11) Pyresttest

PyRestTest is a Python-based REST API testing platform. It supports tests in JSON or YAML config files. Therefore, there is no code needed.

Features:

It’s minimal dependencies, which allows easy deployment on-server for smoke tests/health checks
This API testing tool will return exit codes on failure
Pyresttest allows to generate/extract and validate mechanisms to build test scenarios

Download link: https://github.com/svanoort/pyresttest

12) Ping API

Ping-API is API testing allows to write test script in JavaScript and CoffeeScript to test your APIs. It allows inspecting HTTP API call with a complete request and response data. For any failures, the user gets a notification through email, slack or Hipchat.

Features:

Ping- API to schedule test in every minutes or hour
Support for writing script to set request headers, body and URL parameters. It supports for writing script to validate response headers and body
Validate CRUD flow and log in to Ping API

Download link: https://ping-api.com/

13) Postman

Postman is a plugin in Google Chrome, and it can be used for testing API services. It is a powerful HTTP client to test web services. For manual or exploratory testing, Postman is a good choice for testing API.

With Postman, almost all modern web API data can be extracted
You can write Boolean tests within Postman Interface
You can create a collection of REST calls and save each call as part of a collection for execution in future
Unlike CURL, it is not a command line based tool, which makes this tool hassle free of pasting text into command line window
For transmitting and receiving REST information, Postman is more reliable

Link to Postman

14) Karate DSL

Karate is a new API testing framework base on cucumber library. Karate DSL allows testers to write meaningful tests for web service using a domain-specific language.

Features:

It supports configuration switching/staging, multi-threaded parallel execution
Allows testing and generating reports just like any standard Java Project
Possible to write tests even for the non-programmers
The karate API testing tool allows re-use of payload-data and user-defined functions across tests.

Download link: https://github.com/intuit/karate

15) HttpMaster

It is a web development tool to automate web application testing, including API testing, service testing and website testing. It is primarily used as web API test tool to automate testing of web API calls.

HttpMaster is a best choice for API testing as it has got

Several http methods (GET, POST, DELETE etc.)
Dynamic parameters of various data types to make batches of different API requests
Various validation types and advanced validation expressions

Download HttpMaster

16) SOAP Sonar

SOAPSonar is an API testing and diagnostics platform for SOAP, XML, REST-based web services. Use external sources like Excel, MS SQL, Oracle or any ODBC Database for automated tests.

Features:

Identifies Web Services vulnerabilities like Malware Threat and SQL Injection
Web Service Functional Testing with Success Rule Framework and Concurrent Client Load Testing
Native HP QC Integration, and supports integration with Hudson, Ant, and JUnit

Download link: http://www.crosschecknet.com/

17) HP QTP(UFT)

It provides an extensible framework helpful in executing and building the functionality of headless system that do not have a user interface. It helps to test the headless technologies like Databases and Webservices, JMS, etc. By using the API test conversion tool, you can convert soapUI tests to UFT (QTP) API tests.

Download QTP