Nicknamed the Poet's Bible, the Lyricist's Lexicon is a pair of books: a dictionary of rhymes and a dictionary of consonance. Both are free to download below.
A website version is hosted at poet.puthyrathy.com:
If you're curious about the story of the books, I also wrote a Substack essay about them. (No, it wasn't just prompting ChatGPT. As of 2026, it still can't reliably identify Khmer rhymes or consonance.)