BBEdit (barebones.com) on macOS. - Perl regexp's - Worksheets for thing you'd want to remember - Process Duplicates Lines / Process Lines Containing - Nice

BBEdit (barebones.com) on macOS. - Perl regexp's - Worksheets for thing you'd want to remember - Process Duplicates Lines / Process Lines Containing - Nice set of Markup tools - Diff - Support all kinds of versioning systems Araxis Merge (x-platform) for text, image, folder diffs.