Sizzy is a tool for developing responsive websites crazy-fast. It allows you to preview a URL on multiple devices at once, filter the devices, zoom them in and out, and more. | Venngage AI One-Pager Generator creates polished, on-brand one-pagers in seconds using just a prompt. Simply add your content, Venngage turns it into a visually clear, professional one-pager ready to share with stakeholders, clients, or investors. |
| - | Instant AI-driven one-pager creation, Professional sharing & export options |
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It is a free & open-source developer toolkit for expressing visual styles that can be shared across codebases, native platforms, and teams. It radically lowers the cost of delivering a consistent visual identity across native apps & websites.

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Create dynamic, cross-platforms UIs using design tools, code, or both.

Gravit is a design tool for Mac, Windows, Linux, ChromeOS and the Browser made in the spirit for Freehand and Fireworks. It is completely written in HTML5, Javascript and CSS3. Gravit consists of the core engine called "Infinity", the actual Application and the core Module called "Gravit".

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It is built for the purpose of providing a free and open-source GUI prototyping tool that people can easily install and use to create mockups in popular desktop platforms.

It provides the same flexibility as your favorite image editor but also writes semantic HTML and remarkably succinct CSS. It's time to expect more from a web design tool.

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Interactive field-aligned mesh generator.

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