Current status: replacing prog2, an emacs lisp special form, with a macro: https://gitlab.com/wilfred/emacs/commit/91967f11ed8a69ea29215e8219cafaef5f550fe2 Unsure if there's interest upstream.
miniblog.
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PYPL: PopularitY of Programming Language https://pypl.github.io/PYPL.html is a nice PL metrics tracker that's an alternative to TIOBE.
It has a clear methodology and it carefully chooses keywords to avoid e.g. Python metrics being affected by interest in snakes.