Preferred Networks, Inc. and Preferred Infrastructure Inc. have released Chainer, a Deep Learning Framework. We are proud to release this Powerful, Flexible, and Intuitive Framework as an open source software.
We will provide latest news on Chainer through the following media:

Official Website： http://chainer.org
Twitter：@ChainerOfficial 
Google group：Chainer User Group

We will also post announcements to Google+ Deep Learning Community

For design concepts and technical characteristics of Chainer, please refer to Preferred Research Blog (Japanese)