Google open source their Machine Learning System – Anchorage Tech Time - Albany Daily Star Gazette

Google, of course, can't give away all of its secrets. That's why TensorFlow's release into the wild only includes part of the code that allows it to run on a single machine. Despite being shared under what's called an Apache 2 license (meaning anyone is free to use it). These days, the big Internet giants frequently share the software sitting at the heart of their online operations. Open source accelerates the progress of technology.