HttpMaster
Advanced HTTP testing with powerful automation
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HttpMaster - Advanced HTTP testing with powerful automation

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After years of development, this major release delivers a powerful desktop HTTP testing environment for developers. Create, automate, and validate HTTP workflows with OpenAPI support, request chaining, dynamic parameters, advanced response validation, and cURL generation. Now with native ARM support, improved performance, and a completely free, offline experience—no ads, subscriptions, or feature restrictions.

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Maker
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This tool was originally built in 2013 because I wanted a fast, practical HTTP testing application that I would actually enjoy using every day. What started as a small personal utility gradually evolved into a full-featured desktop tool for testing APIs, web applications, and HTTP services.

This is the biggest release since the project began. After months of development, it introduces native ARM support, better OpenAPI integration, advanced cURL command generation, improved performance, more powerful workflow automation, new HTTP execution engine, and many other improvements throughout the application.

The tool is completely free, works offline, requires no account, and has no ads, subscriptions, nag screens, or feature restrictions.

I'm happy to answer any questions, hear your feedback, or discuss ideas for future improvements. Thanks for checking it out!

love that it's actually a full desktop app that works offline with no restrictions, basically everything else in this space wants you to sign up for something. the request chaining setup is genuinely clean too, felt intuitive right away.

Maker

 Thanks! I'm happy to hear that. Keeping the tool completely offline and account-free has always been an important design goal. Request chaining has grown a lot over the years, glad you like it.

A solid offline tool that already covers a lot of ground. One thing that would make it even more useful for me is a built-in diff view to compare two response bodies side by side, especially handy when validating API changes across versions.

Maker

 Thanks! I'm glad you like the feature set. The application does support viewing response bodies side-by-side, but it doesn't currently provide a true diff view like WinMerge or similar tools. I'll definitely keep it in mind for a future version.

OpenAPI support is a really nice touch, especially the no-strings-attached free part. One thing that would make it stand out even more for me is a built-in diff view for responses across runs, so I can quickly spot when an endpoint starts returning something unexpected without having to export and compare manually.

Maker

 Thanks! Glad you like the OpenAPI support and the no-strings-attached approach. I agree, a diff view across execution runs would be very useful for spotting unexpected API changes. Will keep this in mind for future improvements.

Offline-first HTTP testing that actually feels like a real tool rather than a web wrapper. The request chaining made it easy to pipe one call into the next without juggling scripts.

Maker

 Thanks! I'm glad the offline-first approach and request chaining stand out. The goal has always been to build a practical desktop tool that makes real-world HTTP testing workflows simpler.