Cytoscape.js is an open-source graph theory (a.k.a. network) library written in JavaScript. You can use Cytoscape.js for graph analysis and visualisation - cytoscape.org 
Though Cytoscape.js shares its name with Cytoscape, Cytoscape.js is not exactly the same as Cytoscape desktop. Cytoscape.js is a JavaScript library for programmers. It is not an app for end-users, and developers need to write code around Cytoscape.js to build graphcentric apps.
Cytoscape.js is a JavaScript library: It gives you a reusable graph widget that you can integrate with the rest of your app with your own JavaScript code. The keen members of the audience will point out that this means that Cytoscape plugins/apps — written in Java — will obviously not work in Cytoscape.js — written in JavaScript. However, Cytoscape.js supports its own ecosystem of extensions.
# Packages
* npm : npm install cytoscape * bower : bower install cytoscape * spm : spm install cytoscape * jspm : jspm install npm:cytoscape * meteor : meteor add cytoscape:cytoscape * Cytoscape.js & Cytoscape
We are trying to make the two projects inter-compatible as possible, and we do share philosophies with Cytoscape: Graph style and data should be separate, the library should provide core functionality with extensions adding functionality on top of the library, and so on.
# See also
It has not really been possible until very recently to represent large interactive graphs visually, and especially not on the web.
Here we look at how we might visualise the Federation, and explore using Cytoscape to achieve a scaleable ability to visualise the network of links and in particular Network of Forks relevant to a particular writing context.