Office 2016 and Office 2019 approaching on October 14, 2025. After this date, these versions will no longer receive security updates, leaving users vulnerable to threats. LibreOffice stands out as a top open-source alternative. It offers full compatibility with Microsoft Office formats (DOCX, XLSX, PPTX), supports long-form documents, spreadsheets, presentations, and even database management via Base. It’s free,
