Best Css Tools & Frameworks

5 open-source Css tools for developers.Compare tech stacks, licenses and GitHub stars — all in one place.

MCPApache-2.0

Open-source framework that turns HTML, CSS, and animations into deterministic MP4 videos, built for AI agents.

53k·Developer Tools·Open source

Alternative to

AGPL-3.0

AI-agent Skill for generating polished HTML slide decks with editorial and Swiss layouts, image prompts, social covers,

25k·AI Agents·Open source

Alternative to

Free interactive course teaching AI-native product builders to code from zero by shipping real products.

19k·Developer Tools·Open source

AGPL-3.0

Claude Code/Codex skill to generate Xiaohongshu carousels & WeChat cover pairs with editorial and Swiss design systems.

6.7k·Developer Tools·Open source

Alternative to

Apache-2.0

Turn HTML, CSS & data into MP4 videos locally with coding agents, 21 templates, AI soundtrack.

4.5k·Developer Tools·Open source

Alternative to