ec50estimator: An easy way to estimate EC50 for multi isolate datasets 
Introduction
ec50estimator provides a quick, easy and automated way of estimating the effective control to 50% of growth inhibition (EC50) from multi isolate datasets. It also is optimized to deal with stratified data.
Download and install
Install the stable release from CRAN.
install.packages("ec50estimator")A development version can be download using the following code:
if (!require(devtools)) {
install.packages("devtools")
}
devtools::install_github("AlvesKS/ec50estimator")