OpenOffice is a powerful Office Suite, it combines a Word Processor, Spreadsheet, Power-Point, Drawing and even a database management programs. Writer is a powerful word-processor for composing many kinds of documents. Calc is a spreadsheet program, ideal for data analysis and reporting. Impress helps you to create professional power-point slides in a short time. Draw is a drawing program, it can create 2D or 3D diagrams. All these programs can save document in PDF or SWF (aka Flash movie) format, they can be viewed simply within a web browser.