Ramayana on hindunet.org
The complete Valmiki Ramayana is available here in XDVNG devanagari, ITRANS, or as devanagari postscript files. The navigation bar greatly facilitates use of the text. The complete Ramacharitamanasa is also available in ISCII, ITRANS, CSX, PS or XDVNG formats. Links to other interesting sites are given. Definitely worth a visit.
http://www.hindunet.org/ramayana/
Gita Press Gorakhpur, India
Founded in 1923 to propagate the Gita, over the years, the institution has made available more than 300 million copies of the Gita, Ramayan, Bhagvat, Durga Saptashati, Puranas, Upanishads, and other books in Sanskrit, Hindi, English, Gujarati, Tamil, Marathi, Bangla, Oriya, Telugu, Kannada, and other Indian languages. Ramcharitmanas (.pdf files) is available here for viewing and for download. Each verse is given in devanagari with a roman tranliteration and an english translation.
http://www.gitapress.org/Download_Eng_pdf.htm
Valmiki Ramayana
Sri Desiraju Hanumanta Rao and Sri K. M. K. Murthy
Each sloka is available in ITRANS, Devanagari or Roman transliteration. Fonts need to be downloaded for the last two formats. Word meanings in english and an english translation for each sloka are given. The work is still in progress.
http://www.valmikiramayan.net/
Lessons from Ramayan
http://www.boloji.com/ramayana/index.htm
The Ramayana: A "Telling" of the Ancient Epic
http://www.globaled.org/curriculum/story2a.html
Understanding Hinduism - Ramayana