chainer.links.caffe
Caffe is a popular framework maintained by BVLC at UC Berkeley. It is widely used by computer vision communities, and aims at fast computation and easy usage without any programming. The BVLC team provides trained reference models in their Model Zoo, one of the reason why this framework gets popular.
Chainer can import the reference models and emulate the network by ~chainer.Link implementations. This functionality is provided by the chainer.links.caffe.CaffeFunction class.
CaffeFunction