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OpenOffice.org 3 is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on all common computers. It stores all your data in an international open standard format and can also read and write files from other common office software packages. It can be downloaded and used completely free of charge for any purpose.

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VLC media player

The cross-platform open-source multimedia framework, player and server

VLC media player is a highly portable multimedia player and multimedia framework capable of reading most audio and video formats (MPEG-2, MPEG-4, H.264, DivX, MPEG-1, mp3, ogg, aac ...) as well as DVDs, Audio CDs VCDs, and various streaming protocols. See the full features list.

CamStudio is an open source screencast application cabable of capturing both audio and video directly of your PC

screen - and store it for later playback. This is great for demonstrating how different applications, websites, etc. work and how to use their features. CamStudio outputs AVI files but is able to convert these to macromedia flash files (swf), so that the screencasts can easily be used on any website. Advanced features include adding of captions, video-in-video e.g. for narrator and CamStudio's own loss-less codec, which provide sharp images while keeping the filesize to a minimum.

7-Zip is a file archiver with high compression ratio. It supports the following formats for packing/unpacking: 7z, ZIP, GZIP, BZIP2 and TAR - and the following for unpacking only: RAR, CAB, ARJ, LZH, CHM, Z, CPIO, RPM and DEB. When using 7z format 7-Zip also support AES-256 encryption. With its windows style file manager and its integration into the Microsoft Windows

shell - 7-Zip is a powerful competitor to both the commercial products on the market and the freeware ones. Also 7-Zip is available in 60 languages.