Lool

Lool is a free and open-source spreadsheet application that is part of the LibreOffice suite. It is designed to be compatible with Microsoft Excel, allowing users to open, edit, and save files in the XLS and XLSX formats. Lool offers a range of features, including support for complex formulas, pivot tables, and data analysis tools. It also includes features for creating charts and graphs, as well as the ability to format cells and worksheets. Lool is available for multiple operating systems, including Windows, macOS, and Linux, and can be used as a standalone application or integrated into other software solutions. The development of Lool is overseen by The Document Foundation, an organization dedicated to promoting open-source software for document creation and editing.