DeepFace

DeepFace is an open-source Python library for facial recognition and facial attribute analysis (age, gender, emotion, race estimation), wrapping several state-of-the-art face-recognition models (VGG-Face, Facenet, ArcFace, and others) behind one simple API.

Rather than implementing a face-recognition model from scratch, it provides a consistent interface for face verification (do these two photos show the same person), face search (find this person in a database of faces), and facial attribute analysis.

Used in applications needing face-based identity verification, photo organization/tagging, or demographic analysis — always worth checking the legal and consent requirements for facial recognition in your jurisdiction before deploying.