Custom Random Data Files

I'm looking for a web site that generates random data as specified by the user. There are a number of sites that provide random words or random integers; however, I'm looking for something that will generate a combination of datatypes. For example, a file of 500 alternating random words/strings and integers (i.e, keys & values) or 2000 alternating random words, doubles, and special symbols. Downloadable as a text file, either csv or space delimited.

Purpose would be to test various sorting & searching algorithms.