LibreOffice includes the following components.

Text Document: 

Writer is a featurerich tool for creating letters, books, reports, newsletters, brochures, and other documents. 

Calc (spreadsheet): 

Calc has all of the advanced analysis, charting, and decision making features expected from a highend spreadsheet. It includes over 300 functions for financial, statistical and mathematical operations, among others.

Impress (presentations): 

Impress provides all the common multimedia presentation tools, such as special effects, animation, and drawing tools. 

Base (database):

Base provides tools for day-to-day database work within a simple interface. It can create and edit forms, reports, queries, tables, views, and relations, so that managing a relational database is much the same as in other popular database applications.

Math (formula editor): 

Math is the LibreOffice formula or equation editor. You can use it to create complex equations that include symbols or characters not available in standard font sets.