The Hacker's Coloring book lets you change 11 items fast, compare 2 pages side by side, or make a style sheet. It features hex or decimal numbers, different fonts, and different sizes.
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.