µFeed
[git]µFeed is a micro RSS feed parser for POSIX. µFeed has no networking, no display capabilities, and does no string manipulation. It extracts meaningful information from a RSS stream into TSV format for convenient use by other programs.
Example: Open NASA's photo of the day:
$ curl -s https://www.nasa.gov/feeds/iotd-feed/ \
| ufeed | dmenu | cut -f2 | xargs firefox