libpropc++ (for C++) 

Template library for properties in C++ (used like 'widget.color = "red";). In class Widget use: prop::PropertyWidget, Color, &Widget::set_color, &Widget::get_color color; Binding properties to auto-synchronize their values.
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Rasputin 

Many Internet Service Providers (ISP) disconnect your computer when they detect a lack of Internet access for a certain amount of time. Rasputin simulates network activity to help keep your Internet connection alive.
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OscilloMeter - Spectrum Analyzer 

Real-time OscilloScope + FFT Spectrum Analyzer of data accepted from sound card or other ADC you will want.
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Alarit Net Serial Driver (ANSD) 

ANSD gives you the possibility to give the remote access to serial port via TCP/IP.
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ITS Net Serial Driver (ITSNSD) 

ITSNSD gives you the possibility to give the remote access to serial port via TCP/IP.
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EXP Net Serial Driver (ENSD) 

ENSD gives you the possibility to give the remote access to serial port via TCP/IP.
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