OrbisCAD

Led and developed by the community, OrbisCAD pursues two basic objectives: <ul><li>building a powerful and reliable project which can fully handle the needs of the sector and</li> <li>generating an interactive methodology based on continuous feedback in order to be able to accomplish the first aim.</li></ul> This exciting software is based on Java on uses lots of open-source libraries to handle a number of formats that usually are the pain for the user (the evil DWG too). Vertex snapping makes it easy to use and the GUI is simple and clean. It has a command-line available, too, for the input by hand.