jNottery is a jQuery plugin that lets you add notes and markers to webpages. All the data is encoded as a part of an URL which makes it easy to share or save.
Code Callout allows you to create links in your webpages to highlight and comment on a source code listing in the page. When you click a link, the page scrolls to the indicated lines, highlights them, and pops up a note. When you’re done examining the code, you click a button to continue reading where … Continue reading