When using Interactive Real Analysis, remember that we may have covered topics in a somewhat different order. Thus, just as with any other alternative textbook, the author may sometimes be using results that we have not yet talked about in class or read about in Rudin.
Current material:
Sections we have covered (more or less):

Analysis WebNotes is an on-line "hyper-textbook" for a year-long course in mathematical analysis. This large suite of pages (roughly 500 webpages) comprises complete course notes, homework assignments and solutions, and interactive discussion boards and demonstrations. The setup is rather class-dependent, so I am still working on a method for setting up delivery of the best relevant sections for our class. I will make this link active when I have finished this setup.