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Discover tools from different categories to expand your toolkit beyond Developer's World.

Browse calendar, view holidays and plan events with our interactive online calendar tool. Free, easy-to-use calendar with customizable holidays.

Complete REST API testing environment with endpoint builder and response visualization.

Discover healthy recipes and analyze their nutritional content. Search recipes by dietary preferences, calorie goals, and nutritional requirements.

Calculate pediatric medication doses using Cowling's Rule based on age. Safe and accurate dosing calculations for children aged 1-12 years.