I've been using runawk from its early days till now. I find it very useful for my daily work. There's no need to tell here again how powerful and simple standard awk is. Runawk wrapper gives it another boost by implementing a nice support for modules and a fairly large collection of ready-to-use modules and functions. If you are doing any development in awk which is more complex than just a single line of code, I strongly recommend you to try out runawk.