Development/Administration/Operating Systems

• Debian GNU/Linux (The universal operating system)
• Gnome desktop environment and Gnome shell extensions
• Back in time (A simple backup tool for Linux)
• Gambas (Almost means BASIC. Like Visul Basic 6, but free under linux)
• jEdit (programmer's text editor )
• Geany
• Code::Blocks(The open source, cross platform, free C++ IDE)
• Anjuta DevStudio(GNOME Integrated Development Environment)
• Dev-C++(C/C++ IDE for Windows)
• NetBeans (free Java IDE)
• Filezilla The free ftp solution
• Wine (Run Windows applications on Linux)
• Ubuntu
• WAMPServer and XAMPP
• TeamViewer
• VNC

Research

• PSPP (Free Open source statistical program for Linux - Similar to SPSS)
• TexLive (LaTex on Linux/Windows)
• MiKTeX (LaTex on Windows)
• TexMaker (Free Latex Editor)
• Greek in Latex (using XeLaTex)
• Weka (Data Mining Software)
• KEEL(Knowledge Extraction based on Evolutionary Learning)
• Orange (Data Mining Software)
• JabRef (open source bibliography reference manager)
• Mendeley (a free reference manager and academic social network)
• Publish or Perish

Various

• Prezi (a cloud-based presentation software)
• Avidemux (free video editor)
• Notepad++
• Audacity (free software for recording and editing sounds)
• mozilla firefox
• mozilla thunderbird
• GIMP (The GNU Image Manipulation Program)
• DIA (Dia a drawing program)
• Avira antivirus
• Avast antivirus
• Libre Office
• VLC media player
• Foxit PDF reader
• Adobe reader
• google earth
• fBackUp (free backup software)
• XnView (a software to view and convert graphic files)
• Skype
• HotPotatoes (Development of web learning tests)
• k9 web protection (Parental web control)