Top TestMace Alternatives for API Development

TestMace is a powerful IDE designed for API development, offering features like scenarios, autocompletion, and syntax highlighting, and is available across Windows, Linux, and MacOS. While TestMace provides a comfortable environment for writing tests and sharing code, developers often seek alternatives for various reasons, including specific feature needs, platform preferences, or budget considerations. This guide explores the best TestMace alternative options available today, helping you find the perfect tool to streamline your API development workflow.

The Best TestMace Alternatives

Looking to switch from TestMace or simply explore other excellent API development tools? Here’s a curated list of top alternatives that offer robust features, diverse platforms, and unique functionalities to enhance your API testing and development experience.

Postman

Postman is a widely popular tool that facilitates the development and use of APIs. As a strong TestMace alternative, it provides all the functionality needed to create or simulate API specifications and use them effectively. It's a Freemium tool available on Mac, Windows, Linux, Web, and Chrome OS, featuring API Development, REST API, API Management, CI/CD, and more.

Insomnia REST Client

Insomnia REST Client is a powerful REST API Client with cookie management, environment variables, code generation, and authentication, making it an excellent open-source TestMace alternative. Available on Mac, Windows, and Linux, it boasts features like Lightweight design, Request Chaining, GraphQL integration, and Cloud sync.

HTTPie

HTTPie is a modern command-line HTTP client and a user-friendly curl alternative, offering an intuitive UI, JSON support, and syntax highlighting. This free and open-source TestMace alternative is available for Mac, Windows, and Linux, focusing on Command line interface and Web Testing.

Paw

Paw allows you to easily craft HTTP requests, test them, and archive them with features like HTTP Headers, URL parameters, and form-encoded POST key-values. This commercial TestMace alternative is exclusive to Mac and offers Developer Tools, Html parsing, and Request Chaining capabilities.

soapUI

soapUI is a leading tool for functional testing, primarily of web services like SOAP and RESTful web services. As a free and open-source TestMace alternative available on Mac, Windows, and Linux, it stands out with its intuitive Nodes for comprehensive testing.

Advanced REST Client (ARC)

Advanced REST Client (ARC) is an API testing tool that enables web developers to create and test custom HTTP requests. This free and open-source TestMace alternative is available across Mac, Windows, Linux, Chrome OS, and Chrome, offering full headers control, REST API testing, and an Electron-based interface.

Postwoman

Postwoman is an open-source API request builder designed to help you create requests faster, saving development time. This free and open-source TestMace alternative is web-based and self-hosted, featuring an ad-free experience, cross-browser testing, Websocket streams, and GraphQL API support.

RESTer

RESTer is a REST client available as a Firefox and Chrome extension, suitable for almost any web service. As a free and open-source TestMace alternative, it provides API management, project organization, and variable support, making it accessible on Mac, Windows, Linux, Chrome, and Firefox.

HTTP Toolkit

HTTP Toolkit is a suite of open-source tools for debugging, testing, and building with HTTP(S). This freemium and open-source TestMace alternative is available on Mac, Windows, Linux, and Web, featuring built-in docs, HTTP mocking, one-click interception, and a debugger.

HttpRequester

HttpRequester is a convenient tool for making HTTP requests (GET/PUT/POST/DELETE), viewing responses, and keeping a transaction history. As a free and open-source TestMace alternative, it's available on Mac, Windows, Linux, and Firefox, providing debugging capabilities and REST API support for web development.

Each of these TestMace alternative tools offers unique strengths, from comprehensive API testing suites to lightweight command-line clients. We encourage you to explore these options and choose the best fit based on your specific development needs, team size, and preferred platform to optimize your API workflow.