Stringmaker is a little online tool for generation of test strings that are useful in type design processes, most notably spacing and kerning. Stringmaker can be used to generate basic strings of characters that can then be copy-pasted into applications like InDesign, and formatted as needed to test typefaces in progress.
Tips on working with custom character lists:
Made by Nina Stössinger in 2011, and very much in beta. Any questions, feature requests, bug reports? Send them my way. (And if someone who is a better developer than I wants to expand this and make it better, please get in touch.)