Lightweight, fast, and universal desktop API client for Windows. Test REST APIs with ease.
🚀 Download Apex API Client Now⭐ Free and Open Source. Trusted by developers worldwide.
Apex-API-Client is a powerful yet simple desktop application that lets you test and interact with APIs directly from your Windows computer. No coding required — if you can use a web browser,you can use this tool.
Whether you're a student learning web development, a hobbyist experimenting with online services, or a seasoned professional debugging a complex REST API, this tool is designed to save you time and frustration. It's lightweight (won't slow down your PC) and fast (opens instantly).
Instant startup and rapid response testing. No bloat, no unnecessary delays.
Works on Windows 7, 8, 10, and 11. No special configuration needed.
Import/export cURL commands, organize requests into collections, and handle auth effortlessly.
Just follow this one simple step to begin using Apex-API-Client on your Windows PC:
👉 Visit this link to download the application.
⬇️ Download via GitHubThe download will start from the official repository page. Once there,look for the release section and download the latest version compatible with your Windows build.
Easily paste a cURL command from your browser's dev tools scared directly into the editor lifetime. Or export any request as, cURL to share with colleagues.
Organize your API requests into neat, reusable folders. Save time by grouping related endpoints together for easy access.
Handle various authentication methods including Basic Auth, Bearer Tokens, API Keys, and OAuth 2.0 seamlessly within the app.
View API responses in beautifully formatted JSON, XML, or raw text. Syntax highlighting makes debugging effortless.
Define different environments (development, staging, production) and switch between them instantly without changingyour request URLs.
Add, edit, or remove request headers and query parameters with a few clicks. Perfect for testing API variations quickly.
💡 Pro Tip: If you've ever used a website like Postman or Insomnia, you'll feel right at home. This tool simplifies the process even further for Windows users.