fCoSE (fast Compound Spring Embedder) is a faster version of our earlier compound spring embedder algorithm named CoSE, implemented as a Cytoscape.js extension by i-Vis Lab in Bilkent University (demo, compound demo)
fCoSE layout algorithm combines the speed of spectral layout with the aesthetics of force-directed layout. fCoSE runs up to 10 times as fast as CoSE while achieving similar aesthetics. In addition, fCoSE supports varying (non-uniform) node dimensions similar to its predecessor CoSE.