Minimal Flexible CSS Grid Layout – iota.css
iota.css is a lightweight CSS layout library which makes it easier to generate flexible, responsive grid layout using CSS grid properties.
JavaScript & CSS Grid Layout
Basic 12-column Grid Layout In Pure CSS/LESS – Less Grid Boilerplate
Less Grid Boilerplate is a lightweight and standalone CSS/LESS library to generate a basic, responsive, flexible grid layout for modern web design.
Responsive Flexible Grid Layout JavaScript Library – Awesome Grid
A JavaScript Grid plugin which helps you dynamically render a responsive, customizable, mobile-friendly, Pinterest-like grid layout.
Compact Cascading Grid Layout In JavaScript – pkmx
pkmx is a tiny, flexible, dependency-free JavaScript library used for creating a compact cascading grid layout without any space between cells.
Responsive Flexbox Based Grid Layout – Griddd
Griddd is a lightweight, responsive, CSS flexbox based grid layout that is fully customizable via SASS.
Tiny 12-column Flexbox Grid – ragrid.css
The ragrid.css provides an easy and convenient way to create a responsive, flexbox-based grid layout for your modern web project.
Minimalist Responsive Grid System – Kindling Grid
Kindling Grid is a minimalist pure CSS grid system that makes it easier to generate a responsive, flexible grid layout with support for custom offset.
Minimalist Masonry-like CSS Grid Layout
A simplest pure CSS implementation of the Masonry- and Pinterest-like responsive grid layout.
Responsive 12-column Grid Layout – SpaceGrid
SpaceGrid is a lightweight CSS library used to render a responsive, 12-column grid layout for your modern web design.
Grid Overlays For Modern Web Layout Design – Graaf
Graaf is a collection of pure CSS grid overlays that display grid and measurement overlays for grid system design.