Generating Word Search Puzzles

http://weblog.jamisbuck.org/2015/9/26/generating-word-search-puzzles.html

Word-Search Puzzle Generator

This is a simple library and utility for generating word-search puzzles from vocabulary lists. The puzzles can be configured to allow words to be hidden in various ways (diagonal, backwards), as well as to include a message hidden in the unused squares. The puzzles are emitted as PDF documents.