spritesmith
Utility that takes images and creates a spritesheet with JSON sprite data
svg-sprite
SVG sprites & stacks galore — A low-level Node.js module that takes a bunch of SVG files, optimizes them and bakes them into SVG sprites of several types along with suitable stylesheet resources (e.g. CSS, Sass, LESS, Stylus, etc.)
gulp-svg-sprite
SVG sprites & stacks galore — Gulp plugin wrapping around svg-sprite that reads in a bunch of SVG files, optimizes them and creates SVG sprites and CSS resources in various flavours
maxrects-packer
A max rectangle 2d bin packer for packing glyphs or images into multiple sprite-sheet/atlas