Offline Python CSV tool that renames and maps columns via editable JSON
quietforgetools.itch.io/csv-column-mapper-offline-schema-mapping-tool
Offline Python CSV tool that renames/maps columns via editable JSON, applies optional defaults, and writes a new CSV in target column order. Stdlib only; runs entirely offline (no network, accounts, or telemetry). Requires Python 3.10+. Does not do joins, fuzzy matching, or xlsx. Price: £5 on itch.io.