Genderize
Genderize.io predicts the gender of a person based on their first name using a database of over 250,000 distinct names across 177 countries. The API returns the predicted gender (male or female), probability score, and the number of data rows examined to make the prediction. You can optionally filter predictions by country or language to improve accuracy for region-specific names. Genderize is useful for personalizing communication, segmenting user data, and enriching contact databases with demographic information.