For the last few days, I’ve been working on a small header-only C library for the NNTP protocol; anntp.
It is written very very similarly to a stb library, and
supports all of RFC 3977 quirks, abstract groups, articles, basic I/O,
and has absolutely no dependencies whatsoever! (except for TLS support,
which requires OpenTLS/LibreTLS), and can be configured using the C
preprocessor. It is also portable across most UNIX-based operating
systems.