Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
nuvo - Sick of handling messy data? Create the best possible file import experience for your end customers with just a few lines of code.
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
csvbox - Spreadsheet importer for your web app, SaaS or API
Apple Numbers - Numbers lets you build beautiful spreadsheets on a Mac, iPad, or iPhone — or on a PC using iWork for iCloud. And it’s compatible with Apple Pencil.
Flatfile - The new standard for data import