I just stumbled on this site for the Bible and leading translations.
The site appears quite useful. You can read a text in parallel translations, although I didn't see the rather standard RSV or NRSV.
You can read at least Hebrew Bible texts in parallel form in Hebrew, Paleo-Hebrew, Greek, and Latin. The Hebrew includes the BHS, the Leningrad Codex, the Aleppo Codex, and then Paleo texts (although you need to have the font to access those).
You can also read in parallel Spanish, French, German, and Chinese translations--each, again, with multiple translations in each language. There are many many many more translations available. Just see this page for Gen. 1:1.
The site also includes Strong's Concordance, commentaries that evince more of a Protestant, perhaps Evangelical, perspective. It contains cross-references (like the ones you find in the margins of many bibles), but with full verse quotatoins rather than just citations.
There are also atlases, seemingly relevant pictures, and a rather lackluster apocrypha section--the unfortunate ravages of decanonization.
Although the site has some drawbacks, it seems eminently useful, particularly showing the parallels of the various Hebrew, Greek, and Latin versions of the same verse.