Here are a few free data generator tools available online.

1. Lorem Ipsum
   It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using ‘Content here, content here’, making it look like readable English.
   You can specify amount of data to generate in paragraphs, words, bytes.
2.  www.fakenamegenerator.com
   To generate detailed “personal records” – name, gender, date of birth, address, credit card, phone, email, occupation, and many other data fields.
3. Wikipedia
   Although it’s not a data generator by purpose, it’s multi-language articles come extremely handy.