Operating system :    Microsoft Windows, Mac OS X, Linux, BSD, Unix

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Anyone who wants to get out of the Office should check out OpenOffice.org. The not-for-profit organization's mission is to develop, license, and disseminate a suite of open-source word processing, spreadsheet, presentation, and drawing software that competes with Microsoft's Office programs. Sun Microsystems helped OpenOffice get off the ground in 2000 by donating some 7.5 million lines of code; Oracle now sponsors OpenOffice. Governed by an elected community council, OpenOffice depends on the contributions of developers and end-users to pursue its projects, identify and fix software bugs, and improve its technology.

AVG is an umbrella term for a range of anti-virus and Internet security software for the Microsoft Windows, Linux, and FreeBSD computing platforms, developed by AVG Technologies, a privately held Czech company formerly known as Grisoft.

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PeaZip is a file manager and file archiver for Microsoft Windows and Linux. It supports its native PEA archive format (featuring compression, multi volume split and flexible authenticated encryption and integrity check schemes) and other mainstream formats, with special focus on handling open formats.

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FileZilla Client (also referred to as FileZilla) is a free, open source, cross-platform FTP client. Binaries are available for Windows, Linux, and Mac OS X. It supports FTP, SFTP, and FTPS (FTP over SSL/TLS). As of 5 March 2009

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