Munasinghe, RKossinna, PJayasinghe, DWijeratne, D2022-04-252022-04-252020-06-18arXiv:2006.10308 [stat.ME]https://rda.sliit.lk/handle/123456789/2066Power law distributions, in particular Pareto distributions, describe data across diverse areas of study. We have developed a package in R to estimate the tail index for such datasets focusing on speed (in particular with large datasets), keeping in mind ease of use, as well as accuracy. In this short article, we provide a user guide to our package along with the results obtained highlighting the speed advantages of our package.enPower law distributionsfat tailed distributionsheavy tailed distributionsPareto distributionstail indextail estimationfast computationArticledoi.org/10.48550/arXiv.2006.10308