Quadcept 8.2.0 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. The program relates to Photo & Graphics Tools. The following version: 8.2 is the most frequently downloaded one by the program users. The program's installer files are generally known as Quadcept.DesignConverter.exe or Quadcept.exe etc. The actual developer of the software is Quadcept Inc.
From the developer:
Quadcept offers innovative online CAD solutions for circuit and PCB design. Along with circuit and layout design, Quadcept offers many features which helps reduce design time such as Manufacturing Rule Check, seamless electrical & mechanical design work flow, and simulation tool interface.
You may want to check out more software, such as Smart Map, stCAD or eDrawings for SketchUp, which might be similar to Quadcept.