QCad is a powerful but easy to use 2D CAD program for Linux, Windows, and Mac OS X. It uses DXF as its standard file format. While other CAD packages are often rather complicated to use, QCad tries to stay comfortable, and even an absolute beginner can create professional drawings with a minimum of effort.
Panorama2Flash helps you publish panoramic images in batch with Flash. It is meant for people who already have panorama stitching software. It supports spherical and cylindrical panoramic images in JPEG, PNG, TGA, TIFF, and BMP formats. It can play the Flash panorama in full screen. Ceiling and floor images can be added to panoramas.