Lightweight Responsive CSS Grid Framework – BackPack.css
BackPack.css is a small CSS grid framework which helps you generate a fully responsive, 12-column based grid layout for modern web design.
JavaScript & CSS grid layout
Lightweight Masonry Layout Library – Macy.js
Macy.js is a JavaScript library for creating a Masonry- and Pinterest-like grid layout that displays images in dynamic, responsive vertical columns.
Responsive, Draggable, Filterable Grid Layout – muuri
muuri is a versatile JavaScript library which helps you create responsive, draggable, filterable, searchable grid layout with smooth animations.
Lightweight Masonry-like Grid Layout Library – Bricklayer
Bricklayer is a JavaScript library for generating a responsive, dynamic, Masonry- and Pinterest-like cascading grid layout for your web project.
Filterable Masonry Grid In JavaScript – sortableJs
sortableJs is a lightweight and easy-to-use JavaScript plugin to filter through a set of grid items with a subtle shuffle effect.
Minimalist Grid Layout With Pure JavaScript – minigrid
minigrid is a standalone JavaScript library used to generate a responsive, flexible, customizable grid layout for your next web design.
Pinterest-like Responsive Fluid Grid Layout with Pure JavaScript
A pure JavaScript solution used to create responsive, fluid waterfall grid layout as you seen on Pinterest.com.
60 Columns CSS Grid System – 60gs.css
The 60gs.css library lets you create 60 columns grid system based on the CSS Grid Layout.
Small Responsive CSS Framework – strawberry.css
Yet another small CSS framework that helps developers and beginners to quickly create fully responsive, nested grid layouts using CSS flexbox model.
Minimal CSS Layout Framework Based On Flexbox – flexy
Yet another CSS framework to create a responsive, justified/fluid grid of elements using CSS flexbox. Just weights in 0.3kb (minified) and super flexible.