LibreOffice

Another great office suite, libreoffice can serve as an alternative to other proprietary office suites. It a has a strong community of developers who are always updating it. Very much like open office, some office programs included are witer, spreedsheet, impress, draw, base and others. This multi-platform suite is packed with a whole lot of features compared to its counterpart open office.

For complete features, click here!

Official Site!

Download

LibO_3.3.2_Win_x86_install_multi.exe

  or

Visit website for the latest updates

Jose Chess

Jose chess is a really awesome free/open source multi-platform chess game with cool graphics, it enables you to store games in a database backed up by mysql, view games and edit variations and and comments, You can play against a "plugged-in" chess engine and use it for anaysis.

Features:

• graphical frontend to MySQL database
• read and write PGN (Portable Game Notations) files
• 2D and 3D view
• edit games, insert comments, variations
• plug-in chess engine for play and analysis; supports both XBoard and UCI protocol.
  
• Play Fischer Random Chess / Chess 960, or Shuffle Chess
• Opening Books
• ECO opening classification
• Position Search
• Create HTML and PDF files.
• Web Servlet interface

This is probably the best chess software i've ever come across, because of its complexity and  unmatched features. Hope you enjoy it!

If you don't know how to play chess, you should, its a really interesting game :)

Download latest version here!