AgreeStat/360: computing weighted agreement coefficients (Conger's kappa, Fleiss' kappa, Gwet's AC1/AC2, Krippendorff's alpha, and more) for 3 raters or more
AgreeStat/360: computing weighted 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
Cohen's Kappa in R: Best Reference - Datanovia
Standard error of the kappa statistic.
Weighted Kappas - JMP User Community
regression - Standard error of beta: n-1 or n-2? - Cross Validated
Cohen's Kappa in R: Best Reference - Datanovia
Dependence of Weighted Kappa Coefficients on the Number of Categories