Circuit Diagram enables you to make electronic circuit diagrams and allows them to be exported as images. It is ideal for use in coursework; you no longer have to use image editing programs to paste components together.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.