Matt Perry spent six years at Framer building Framer Motion, then left to run it as an independent open-source project. Motion now has 30 million monthly npm downloads. CSS Studio is what comes next: a visual editor that writes its changes directly into your codebase, operated by an AI agent while you point and click.

The workflow is straightforward. Open CSS Studio alongside your project, select an element, adjust colours, layout, typography, transforms, or animations in the panel — and the corresponding CSS lands in your files. No export step, no copy-pasting values, no Figma file acting as a proxy for the real thing.

The animation controls are the most developed part, which tracks for a team whose reputation is built on motion. There's a keyframe timeline with scrubbing and easing, a spring easing editor, and gradient tooling for linear, radial, and conic. Not features added as an afterthought — the actual point of the tool.

Runs entirely locally. Works with React, Vue, HTML, and Tailwind. $99 one-time, no subscription. Early access.

The audience is specific: design engineers, or frontend developers with enough taste to make visual decisions without a designer in the room. If you don't have a codebase to point it at, it has nothing to offer. If you do, it removes a translation layer most teams have quietly accepted as just how things work.

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