I can log into the online OED using my New York Public Library card number!
Of course Perseus has always been completely open, though over-featurized, and for the fine old standard lexica and concordances, blueletterbible.org is actually terrific, intuitive and easy to use. (Use the ‘C’ option on a selected verse).
TLG has a subset of the corpus available for free searching, though a full subscription is still $125 a year. Grrrr. But the subset isn’t too bad.
Even Jstor, which has come in for some abuse in these pages, now allows unaffiliated researchers to sign up for an individual account. This provides mingily limited free reading of some material, and also gives the opportunity to buy items. These seem to run about $12 a pop, from what I’ve seen, which is daylight robbery, of course. I wonder if this grudging pinchfist aggiornamento antedates or postdates Jstor’s encounter with Aaron Swartz, which was really bad for Aaron and should have better for Jstor — should at least have taught those Pere Goriots of the intellectual world more than it apparently has.
Somebody really needs to hit JSTOR upside the head. Hard.