Nacapi - Turn your JSON into a restful API
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
JsonAPI - Application and Data, Languages & Frameworks, and Query Languages
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
ReqRes - A hosted REST-API ready to respond to your AJAX requests.
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.