Alternativas ao WriteMaps para Google Drive - Sheets com licença de código aberto

• Google Drive - Sheets
  Todas as plataformas Windows Mac Linux Chrome OS Android iPhone iPad Web Software as a Service (SaaS) Firefox Chrome Microsoft Office Word Google Drive Google Drive - Docs Google Apps Microsoft Office Suite Google Drive - Sheets
• Licença Open Source
  Qualquer licença Licença gratuita Licença Open Source Licença comercial