LibreOffice

Free office suite with Writer, Calc, Impress, Draw and Base modules.

Writer - Text editor. Used to create and edit text documents.

Calc - Spreadsheet. Allows you to create, edit and analyze data.

Draw - Graphics module. Allows you to create and edit technical drawings, vector graphics and other graphic elements.

Base - Database module. Used to create and manage databases. Allows you to create forms, reports and queries.

Impress - Presentation software. Allows you to design and edit slides with text, graphics, animations and transition effects.