Audience
Data engineers, SREs, analysts, DBAs, and developers on macOS who work with very large files.
About Caxton
Caxton is a native macOS large file text editor and CSV editor in one: a workbench for logs, CSVs, TSVs, JSON, SQL dumps, and exports of any size. One app instead of a text editor, a spreadsheet, and a log viewer: open the file and work. Every delimited file opens as text and as a typed grid; edits in either view show in the other, and saving writes the same file back. Nothing is imported.
It memory maps the file instead of loading it into RAM. A 50 GB log (403 million lines) opens immediately with memory under 160 MB. A 10 million row CSV opens as a sortable grid in 4.4 s, past Excel's row limit. Methodology at caxton.app/docs/benchmarks.
Find and replace with exact counts, filters that keep line numbers, a log viewer mode with severity filters, file compare, 18 encodings, typed sorting, fill series, remove duplicates.
Built for data engineers, SREs, DBAs, and analysts. After the 7-day trial, opening, searching, and filtering stay free; a license adds editing and saving.