Sorry
This question pops up now and again.
No, there is no RSLogixViewer, per se. There is RSLadder, but it's not free, and it just allows an operator to view the logic online (not make programming changes).
The only way to veiw the ladder without spending $$$ is if someone prints out the logic using RSLogix to an Acrobat PDF file.
If you post your RSS file here (just ZIP it and include it as an attachment), usually some kind soul (of which there are many) will print the PDF for you.