DxWnd - Windows hooker - intercepts system calls to make fullscreen programs running in a window, to...
KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
3D Analyze - With the help of 3DA you can change different graphic options under DirectX 8 and OpenGL.
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
SwiftShader - SwiftShader is a high-performance CPU-based implementation of the OpenGL ES and Direct3D 9 graphics...
QUCS - Qucs, briefly for Quite Universal Circuit Simulator, is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit.