AgreeStat/360: computing agreement coefficients (Fleiss' kappa, Gwet's AC1/AC2, Krippendorff's alpha, and more) with ratings in the form of a distribution of raters by subject and category
Fleiss' kappa in SPSS Statistics | Spss statistics, Statistics, P value
Cohen's Kappa and Fleiss' Kappa— How to Measure the Agreement Between Raters | by Audhi Aprilliant | Medium