Jeff's Digital Notary is a Web-based digital
notary service. It's written in Python and allows
you to setup your own digital notary really
quickly. It uses GPG for all signing.
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.