A couple of life-related ones that I regularly use: bank csv to sqlite: stores all of my banking transactions in sqlite. high-tide-calendar-beach: Uses XTide

A couple of life-related ones that I regularly use: bank csv to sqlite: stores all of my banking transactions in sqlite. high-tide-calendar-beach: Uses XTide to create a csv of high/low tide times for a local beach and then converts it to an ics calendar that gets copied to a server where my calendar apps read it. (The local beach is inaccessible at high hide)