The document discusses tools for tabletop game design, specifically spreadsheets and two online tools - Playtest and Card Warden. It provides examples of how spreadsheets can be used to track game systems, components, and attributes for balancing purposes. Playtest allows importing a CSV file to generate card layouts while Card Warden facilitates playtesting digitally by shuffling, dealing and manipulating virtual decks. The document demonstrates these tools through examples from the author's games Memory Matters and Ship Deck.