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NESL (Nestle) is a parallel programming language for nested data-parallel algorithms. It was developed by the Supercomputing Research Center at the University of California, Santa Barbara, in the early 90s to simplify writing programs for parallel architectures. NESL includes features like work-stealing scheduling and a standard library with support for common operations on arrays and lists. The language gained attention as an efficient way to write algorithms that handle large amounts of data by operating on nested sequences in parallel. Although not used widely in industry, its concepts influenced other languages designed for high-performance computing tasks where implicitly parallel operations can be exploited effectively.