Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
JavaScript - Lightweight, interpreted, object-oriented language with first-class functions
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.