Swift lets you write parallel scripts that run many copies of ordinary programs concurrently, using statements like this:

foreach protein in proteinList {
  runBLAST(protein);
}

Swift is parallel: it runs multiple programs concurrently as soon as their inputs are available, reducing the need for complex parallel programming.

Swift is easy: short, simple scripts can do large-scale work. The same script runs on multicore computers, clusters, grids, clouds, and supercomputers.

Swift is fast: it can run a million programs, thousands at a time, launching hundreds per second.

Swift is flexible: it is being used in physical sciences, biological sciences, social sciences, humanities, computer science, education.