Here are a few tech projects:

sslh is a protocol multiplexer.

dtc is a documentation tool to create diagrams that include all protocol layers for dataflows .

conf2struct is a C generator that takes the description of a configuration, and generateѕ a parser based on libconfig on one hand, and a command-line parser based on argtable3 on the other hand, to set up a struct.

And a tech-related, maybe humoristic, article about the history of C and UNIX.