Sumi.css
Minimalist, classless-first CSS framework: one file (6.7 KB min+gzip), no build step or JavaScript, automatic light/dark mode, theming via CSS custom properties and zero-specificity element styles that are easy to override. MIT-licensed.
Similar tools
Proa
Batteries-included Rust web framework with fast server rendering and multi-target rendering (HTML, Markdown and more) from one typed component.
Sygal
Local-first Mac and Windows app plus CLI that converts PDFs, Office files, scans and web pages into clean Markdown or JSON for AI prompts and pipelines.
Weatherdeck
Open-source, read-only status board for TV or phone showing what your AI coding agent lanes and machines are doing and what is waiting on you.
Sphinx
Free, MIT-licensed Git hook that quizzes you on what your coding agent's diff actually does before a push to protected branches goes through; works with Claude Code, Codex, Cursor or plain Git.