WebExtensions: https://developer.mozilla.org/en-US/Add-ons/WebExtensions
bayes: A Naive-Bayes classifier for node.js https://github.com/ttezel/bayes
Natural.js: Another promising text classifier collection written in Javascript. Like ttezel/bayes, this library will require adaption to store its data using storage.StorageArea.
D3: https://d3js.org/ for filter bubble visualizations
We will also investigate other classifiers but the goal of this project is the framework and proof of concept, not a specific classification algorithm. We will want contributors to be able to contribute new classifiers, so each bubble dataset will be tagged with the classifier it works with.