How do I approximate “Did you mean?” without using Google?

Question

I am aware of the duplicates of this question:

• How does the Google “Did you mean?” Algorithm work?
• How do you implement a “Did you mean”?
• ... and

Answer 1

From the horse's mouth: How to Write a Spelling Corrector

The interesting thing here is how you don't need a bunch of query logs to approximate the algorithm. You can use a corpus of mostly-correct text (like a bunch of books from Project Gutenberg).