Comment by mgreenleaf

Document generation from Word Templates (yakdocs.com) & stripe analytics dashboard w/ SQL queries (yak-mu.com), both use Kotlin on the JVM w/ Java WebToolkit (https://webtoolkit.eu/jwt) because of familiarity, kotlin's expressiveness to share components & so that everything is written serverside; OpenBSD as the base operating system because of simplicity and good defaults.