Kotlin enters Tiobe's top 20 rankings Kotlin, JetBrains' Java alternative, has secured the 20th spot in Tiobe’s September 2023 programming language popularity index, marking its highest position ever. NPW Research 20 Sep 2023 This post is for paying subscribers only Subscribe Already have an account? Log in Sign up to receive the latest updates in your inbox, once a week. Free. Your email address Sign up for free Please check your inbox and click the link to confirm your subscription. Please enter a valid email address! An error occurred, please try again later.