CHUNK

Matt Parker breaks down his supporters' efforts to optimize the Jotto Problem. Rust and Julia are two of the languages used, but C++ was a favorite of the record holders.

BWK

Brian Kernighan, who put the K in awk, is still patching it, in this case to provide Unicode and CSV support.

Recycling

Not obsolete quite yet: there is still a market for floppy disks, including 5.25- and 8-inch disks, which really were floppy. Well, flexible.