1. Roget's Thesaurus: This classic thesaurus is organized by categories of meaning, making it helpful for finding synonyms within a specific context. It's been updated over the years and remains a popular choice.
2. Merriam-Webster's Visual Thesaurus: This thesaurus is known for its unique visual representation of words and their relationships. It uses a network-like diagram to show synonyms, antonyms, and related words, making it a great option for exploring word connections.
While these are the most widely used, many other thesauruses exist, both in print and online.