RANDOM.ORG - RANDOM.ORG offers true random numbers to anyone on the Internet.
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
GeneratorMix - A place with hundreds of generators split into different categories from science to entertainment.