PCBWeb is a web-based application that provides powerful tools and resources for PCB design and layout. PCBWeb is designed to make the process of designing printed circuit boards (PCBs) easier and faster for engineers, hobbyists, and students. The app offers a complete suite of tools, including schematic capture, PCB layout, and library creation. Additionally, PCBWeb offers a host of features to streamline the design process, such as online collaboration, simulation, and ordering. With PCBWeb, users can quickly create and edit design files, share their work with other users, and order their PCBs for production. PCBWeb is a great resource for anyone looking to easily create and design their own PCBs.
Discontinued http://www.cburch.com/logisim/retire-note.html
Discontinued The program seems to be no longer updated. The latest version, 0.9.3b, released in June 2016, can still be downloaded from the official website.