Perhaps you would be interested to know that the Sibylline Oracles are available within the Pseudepigrapha module in the program Accordance for Macintosh. The good news is that they are tagged. The tags include parsing details, so that searches can be performed for uninflected forms, or for grammar details. I wrote the tags, so that I would be interested if you notice mistkaes [sic!] that I should correct.
This is good news for anyone interested in working with the Greek text of the SibOr (or any of the Pseudepigrapha, for that matter) . . . the ones who use a Mac, anyway. Thank you, Marco!