Concurrent languages are programming languages designed to handle multiple tasks simultaneously. They allow developers to write programs that can perform several operations at the same time, improving efficiency and responsiveness. This is particularly useful in applications like web servers or real-time systems, where multiple users or processes need to be managed concurrently. These languages often include constructs for managing threads, processes, and synchronization, making it easier to coordinate tasks. Examples of concurrent languages include Erlang, Go, and Java with its Concurrency API. By using these languages, developers can create more scalable and robust applications that can better utilize modern multi-core processors.