I wrote the Python and Go clients for the genderize.io web service, which tries to guess the gender of a given first name and optional locale.
State of the art structured storage for 1986: a Go wrapper around the POSIX NDBM database interface. I wrote the first version of this library on a Mac on a cruise ship, where I needed a persistent key-value store, but had no Internet connection, just OS X system libraries, man pages, and Go documentation. It was a good way to learn cgo .
I wrote flask-oidc at KIXEYE in 2014 to support logins with OpenID Connect for our Monocle customer service app after Google deprecated OpenID 1.0.