Requester Alternatives: Discover the Best HTTP/REST Clients
Requester is a powerful, modern HTTP/REST client for Sublime Text, offering an expansive feature set, modern UX, and first-class support for API testing and test automation. It runs on macOS, Windows, and Linux, boasting features like variable support, parallel request execution, response inspection, fuzzy searchable history, and robust authentication. However, if you're exploring other options or need a Requester alternative that better suits your specific workflow, a variety of excellent tools exist.
Top Requester Alternatives
Whether you're looking for a different interface, more advanced features, or simply a free and open-source solution, these alternatives to Requester offer compelling functionalities for API development and testing.

Postman
Postman is a widely popular Requester alternative that facilitates the development and use of APIs. It provides comprehensive functionality for creating or simulating API specifications across Freemium, Mac, Windows, Linux, Web, and Chrome OS platforms. Key features include REST API and SOAP API support, API Management, CI/CD integration, and a graphical interface.

Insomnia REST Client
Insomnia REST Client is a powerful Requester alternative that offers cookie management, environment variables, code generation, and robust authentication for Mac, Window, and Linux. It is available as Freemium, with open-source options, and boasts features like lightweight design, request chaining, cloud sync, GraphQL integration, and support for environment variables.

HTTPie
HTTPie is a modern command-line HTTP client, serving as a user-friendly Requester alternative to curl. It's free and open-source, available on Mac, Windows, and Linux. Its intuitive UI, JSON support, syntax highlighting, and wget-like downloads make it ideal for command-line web testing.

Paw
Paw is a commercial Requester alternative specifically designed for macOS users. It simplifies crafting HTTP requests, testing them, and archiving them. Features include easy setup of HTTP Headers, URL parameters, form-encoded POST key-values, and clear, readable responses, making it a powerful developer tool with request chaining capabilities.

soapUI
soapUI, from Eviware, is a leading open-source tool for functional testing, primarily focused on web services like SOAP-based web services and RESTful web services. Available for Free on Mac, Windows, and Linux, this Requester alternative provides an intuitive interface for comprehensive testing.

Advanced REST Client (ARC)
Advanced REST Client (ARC) is a free and open-source API testing tool and a great Requester alternative. It allows web developers to create and test custom HTTP requests. ARC runs on Mac, Windows, Linux, Chrome OS, and is available as a Chrome extension, offering full headers control and REST API support.

Postwoman
Postwoman is an open-source API request builder and a compelling Requester alternative that helps developers create requests faster. It is free and self-hosted, accessible via the web, and features an ad-free experience, cross-browser testing, Websocket streams, cross-platform compatibility, and GraphQL API support.

RESTer
RESTer is a free and open-source REST client available as a Firefox and Chrome extension, making it an accessible Requester alternative for various platforms including Mac, Windows, and Linux. It includes features like API management, Google Chrome and Firefox extensions, project organization, and variable support.

HttpRequester
HttpRequester is a free and open-source tool and a suitable Requester alternative for easily making HTTP requests (GET/PUT/POST/DELETE), viewing responses, and maintaining a transaction history. It supports Mac, Windows, Linux, and Firefox, offering debugger capabilities and REST API functionality.

RESTClient
RESTClient is a free and open-source Requester alternative that can be used to test various HTTP communications and RESTful webservices. It features a friendly GUI and rich functionalities, available on Mac, Windows, and Linux.
The best Requester alternative for you will depend on your specific needs, whether that's a preference for command-line interfaces, comprehensive API testing suites, or a simpler tool for quick HTTP requests. Explore these options to find the perfect fit for your development workflow.