Want to spike sort data quickly, efficiently, and in a semi-automated manner? SpyKING CIRCUS 0.4, based on template matching algorithms, is now available. The code can sort with few percent errors cells in vitro and in vivo (this has been validated with paired juxta recordings), handling up to thousands of channels in your recording. The documentation can be found here http://spyking-circus.rtfd.org an the preprint is located there http://biorxiv.org/content/early/2016/08/04/067843