PaddleDetection is an open-source object detection toolkit based on the PaddlePaddle deep learning framework. It provides implementations of popular detection architectures including YOLO series, Faster R-CNN, Mask R-CNN, DETR, and proprietary PP-YOLO models. The toolkit supports end-to-end workflows from model training to industrial deployment, covering tasks like instance segmentation, multi-object tracking, and human pose estimation.