Many state bar association provide free or low cost legal research tools to their members. The folks at 3 Geeks and a Law Blog have produced a nice map which identifies the specific research service that is provided by each state association. For example, Ohio State Bar Association members have access to Casemaker. Members of the Illinois and Iowa bar associations have Fastcase. The New York State Bar Association uses LoisLaw. Members of the Pennsylvania Bar Association have access to InCite. The California, Delaware, and Montana state bar associations are the only ones that do not provide some sort of research service to their members. The data used for the creation of the map was taken from this helpful chart produced by Carolyn Elefant at MyShingle.com.
Legal information and research resources from The Ohio State University's Michael E. Moritz Law Library