Clients often ask us to set up CSV feeds / exports of views (lists of data). Now that Drupal 8 rc1 is out and we're starting to use Drupal 8 more and more, we're running into more and more requests for CSV export on Drupal 8.
For example, let's say the site has a page that lists a company's staff directory, and HR wants to be able to download CSV containing all the staff member details for use elsewhere. This is a perfect use case for the Views Data Export module, together with Views. Views is built into Drupal 8 core.
We can just add that CSV export onto an existing view.
As of about one month ago there is now a Drupal 8 port of Views Data Export - have a look here and here. We have used it to put together a basic CSV export display in a Drupal 8 view, and it works as expected. This module is still very much under development, but it is looking quite solid and promising so far.