Engineering, Technologies, Instrumentation and Automation.
Software tools, Helpers, EDA tools, Scientific Tools.
ConTEXT is a small, fast and powerful freeware text editor, developed mainly to serve as secondary tool for software developers. 
powerful syntax highlighting for: C/C++, 80×86 assembler, Tcl/Tk, XML, Fortran.
ConTEXT project is offered For Sale - Eden Kirin, author of ConTEXT Programmers Editor project.
(This is an Excellent Code Editor, many powerful features, helps assembly language programming, many microcontrollers code, highlighters available - delabs)
Zelscope Sound card oscilloscope
Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer’s sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal - which can be music, speech, or output from an electronic circuit.
Zelscope features the interface of a traditional oscilloscope, with conventional gain, offset, timebase, and trigger controls. As a real-time spectrum analyzer, Zelscope can display the amplitude and phase components of the spectrum.
Dia is a gtk+ based diagram creation program released under the GPL. It can be used to draw many different kinds of 
diagrams. It currently has special objects to help draw entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and simple circuits. It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape. [from DIA Home Page] And it continues evolving. available for Win32, too.
