Bootstrap - Simple and flexible HTML, CSS, and JS for popular UI components and interactions
Startup Toolkit - Interactive how-to guides to launch your startup
Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.
Become an Indie Hacker - The ultimate resource for starting profitable side projects
Materialize CSS - A modern responsive front-end framework based on Material Design
Bites - Ready to use modals and popups