#guix https://gnu.org/s/guix
Functional (as in functional programming language) package manager and, optionally, complete Linux distribution, offering cool features like atomic upgrade, rollback, per-user and per-session package installs, and package definitions written in Scheme (Guile).
#haunt https://haunt.dthompson.us/
Static web site generator written in, and sites expressed in, Scheme (Guile).
@dthompson Your cert went invalid back in June.