TrueCrypt - Open Source System Security

TrueCrypt is a Free open-source disk encryption software for Windows 7/Vista/XP, Mac OS X, and Linux. It can create a virtual encrypted disk within a file or encrypt a partition or (under Microsoft Windows except Windows 2000 and Windows 8 with GPT) the entire storage device (pre-boot authentication).

Calligra Suite

Open Source Office Suite

Calligra Suite is an office suite by KDE created from KOffice in 2010. It is available for desktop PCs, tablet computers, and smartphones. It contains applications for word processing, spreadsheets, presentation, databases, vector graphics, and digital painting.

LibreOffice - An Open source Office Suite

A powerful open source productivity suite

The LibreOffice suite is a work of OpenOffice, created in 2010, meaning the underlying source code is the same, but the software has gone in a different development direction. LibreOffice boasts the same six applications as Apache OpenOffice- Writer, Calc, Impress, Draw, Base and Math-but the two suites differ in terms of applications features, usability and community support.

Apache Open Office

Apache OpenOffice is one of the better-known open source office software suites available. It provides tools for word processing, spreadsheets, presentations, graphics and databases. Apache OpenOffice lets you save documents in the OpenDocument format, read Microsoft Word documents and save your work in Microsoft Word format.

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