This is from a broadband provider perspective but this company vetro is enabling people to do lay smart fiber. This could help someone lay do a fiber plan for their local municipality
https://www.vetrofibermap.com
I had to clear cookies and start a new session and log into my
gmail account to see the preview version. Otherwise i just saw a 404 or the old contacts version.
In short it looks very much following material design and the style of inbox now.
edit: only personal not apps account have this preview.
From the video, Facebook mentions that they are using the React native for the Facebook iOS groups application. Theres a live demo to demonstrate. Video starts at 24:05.
I believe they call themselves more of the Github of Science for scientific collaboration. Adding hooks to 'push' the tasks and 'checkout' the findings could be maybe extensible on their platform.