Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Memrise - Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
Busuu - Join the global language learning community, take language courses to practice reading, writing, listening and speaking and learn a new language. Learn English with busuu's .