Informationweek IT Skills: Top 10 Programming Languages for 2021 These are the languages most likely to be useful for getting a job as a developer or other IT professional. 1 of 11 Credit: Michael Traitov vis Adobe Stock About a year ago, InformationWeek published a list of the most in-demand programming languages in 2020. For 2021, the lineup of top coding languages includes a lot of familiar names, but the order has changed a bit. Many different organizations publish lists of popular programming languages, but they calculate that popularity in different ways. For example, some take surveys of developers and ask them which languages they like best. Others analyze job postings to see which skills employers are looking for, and still others count the number of web searches for different languages.