The purpose of this web site is to present the code of open source projects. It provides exploration tools, documentation extracted by doing a code analysis, and manual documentation.
To start, read Kezacode - Understanding source code
Explore projects available in the menu: android open source project, vlc media player, libreoffice, the linux kernel, firefox, chromium... Documentation features vary depending on the latest update of each project.
Or discover these examples:
Working on kezacode takes personal time: if you think the result is worth it, you can help to spread the word about this website (talk about it in forums, link to it from your website, and more). More visitors will motivate me to improve the concept (new ways or tools to document code) and the content (new projects or articles).