Professional Developer Tools for macOS

Native applications crafted with care for developers who value performance, reliability, and elegant design.

Our Applications

Each application is built as a native macOS app — fast, focused, and designed to fit seamlessly into your workflow.

XML Edita

The professional XML editor for macOS. XSD validation, intelligent auto-completion, XSLT transformations, visual schema editing with XSD Composer, and project management — all in a single-window interface.

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OhAPI

Visualize and explore OpenAPI specifications through interactive tree diagrams, syntax-highlighted code, and a structured operation browser. Supports Swagger 2.0 through OpenAPI 3.1.

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OhAPI Designer

Author and validate OpenAPI specifications with context-aware auto-completion, inline validation, snippet templates, and a visual operations panel.

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Why CoxOne?

We believe developer tools should be fast, focused, and beautifully crafted.

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Native Performance

Built with Swift and AppKit, our apps launch instantly and feel at home on your Mac. No Electron, no web views — just pure native speed.

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Privacy First

We do not collect any personal data. Your documents, your APIs, your work — everything stays on your Mac.

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Focused Design

Each app does one thing and does it well. No bloat, no unnecessary features — just the tools you need to be productive.

macOS Applications

195

Countries Supported

100%

Native Swift

Data Collected

Built for developers, by developers

Our applications are not web apps — they are native macOS desktop applications that run entirely on your Mac. There is no subscription: a single purchase gives you lifetime access to the version you buy, including all minor updates.