Last week Stanford open sourced the code responsible for the Nearby on Shelf feature in SearchWorks as the Blacklight Browse Nearby gem. This feature has been highly sought after by various Blacklight institutions to be contributed back to the community. In keeping with the spirit of the vibrant open source community around Blacklight, Stanford has contributed the development effort to get this codebase available for use and contribution by other Blacklight implementers.
The release of this software was the culmination of a re-write of the SearchWorks code making it an installable package, more generalizable, and suitable in an open source context. Due to that fact, the end product is much more generic that SearchWorks' version (as you can see in the side-by-side screenshots below with SearchWorks being on the right) however it is infinitely more customizable.