Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
- Self-Hosted


Bootstrap is described as 'Open-source collection of tools for creating browser sites and applications. It contains HTML and CSS-based design templates for typography, forms, buttons, charts, navigation and other interface components, as well as optional JavaScript extensions' and is a very popular CSS Framework in the development category. There are more than 100 alternatives to Bootstrap for a variety of platforms, including Web-based, Self-Hosted, Mac, Windows and Linux apps. The best Bootstrap alternative is Materialize, which is both free and Open Source. Other great apps like Bootstrap are Foundation, Bulma, Semantic UI and Tailwind CSS.


Yet Another Multicolumn Layout (YAML) is a modular CSS framework for truly flexible, accessible and responsive websites.
AdminKit is a professional Web UI Kit & Dashboard template based on Bootstrap that comes with hundreds of UI components, forms, tables, charts, pages and icons. AdminKit helps you to create your next Bootstrap even faster then before.

Flat UI Pro is made on the basis of Twitter Bootstrap in a stunning flat-style, and the kit also includes a PSD version for designers. Flat UI Pro contains a huge number of basic components, icons and glyphs.
Juiced has many of the same layout features that you know and love, but improves upon them with better mobile targeting, custom column ordering, better alignment options, understandable HTML, and less boilerplate styles.
Simple. Robust. Responsive. Flexible.
Based on Flexbox (CSS Flexible Box Layout Module), Gridlex is a very simple css grid system to quickly create modern layouts and submodules.

inuit.css is a lightweight, constantly updated CSS framework which provides you with a pragmatic and feature-rich starting point for all your projects.
Set column and gutter widths, choose the number of columns, and switch between pixels and percentages.
960 grid system with 12 columns for Responsive Web Design. PSD file which has the 960 grid setup for you based on 32px gutters/margins.

