blocks.so

blocks.so is Ephraim Duncan's open-source collection of 60+ free blocks for shadcn/ui and Tailwind CSS, grouped into categories such as AI chat, AI components and command menus. Each block is accessible, works in any React framework, and installs from its registry or by copying the code, with grey placeholder previews that show structure rather than content. Reach for it when a shadcn project needs an app-level pattern rather than a marketing section, from a maker who promises it will stay open source.