Office Productivity Tools
There are a number of office productivity tools available both under various brand name and also through open source. The most popular office productivity tool available under a brand name is from Microsoft office which contains Microsoft Word, Excel, PowerPoint and Access. However under open source umbrella, Apache OpenOffice is the leading open-source office productivity suite available for word processing, spreadsheets, presentations, graphics, databases and more. It also supports many languages and can be downloaded from Internet and used completely free of cost for any purpose.