Office Productivity Tools
Adobe Reader lets you view, print, and sign Adobe Portable Document Format (PDF) files.
The Google Drive suite provides a web-based free alternative to the Microsoft Office productivity suite including Docs, Sheets, Slides and Forms.
LibreOffice is the free power-packed Open Source personal productivity suite for Windows, Macintosh and Linux, that gives you six feature-rich applications for all your document production and data processing needs: Writer, Calc, Impress, Draw, Math and Base. Support and documentation is free from our large, dedicated community of users, contributors and developers.
Microsoft PowerPoint Viewer
You can view presentations created in PowerPoint 97 and later versions as well as password-protected Microsoft PowerPoint presentations. You can view and print presentations, but it does not support edits.
OpenOffice is a free office software suite for word processing, spreadsheets, presentations, graphics, databases and more. OpenOffice can read files created in other Office suites, including Microsoft Office and can output files in many formats, including PDF.
Prezi is a web-based alternative to Microsoft PowerPoint allowing dynamic, non-linear presentations including animated zooming effects and multimedia content presented in a engaging format.