Sort a CSV, TSV or pipe-delimited table by any column, auto-detecting whether that column holds numbers, dates or text. TYPE DETECTIONNUMERIC / DATE / TEXTCSV OUTCLIENT-SIDE
Auto-detect reads the column: a value that parses as a finite number is numeric, one that parses as a real date is a date, otherwise it stays text. Text sorts by locale-independent lowercase comparison, not ASCII order.

Compare two JSON documents key by key and see exactly what was added, removed or changed.

Turn bits into text or into hex, decimal and octal bytes, at any bit depth you choose.

Encode any text as binary bits with the matching hex and decimal bytes underneath.

Check a YAML file for tabs, bad pairs and duplicate keys, and see the structure it parsed into.

Bank a week of logged sleep against the hours you actually need, then read the recovery schedule that clears the debt without wrecking the next night.

Reflected light off a coated surface: reflectance and hue from film thickness, refractive index and incidence angle, with a plot across the visible band.

Convert between a calendar date and its day-of-year ordinal, ISO week number and week date, in both directions.

Pull every fenced code block out of Markdown into separate downloadable files, with the language and line numbers preserved.