The updated link seems to be https://github.com/crossfilter/crossfilter https://github.com/crossfilter/crossfilter. Crossfilter (the organization) is now activ

The updated link seems to be https://github.com/crossfilter/crossfilter https://github.com/crossfilter/crossfilter. Crossfilter (the organization) is now actively maintaining and extending Square's original crossfilter implementation.