The following are online resources that are not free to use, but may provide a lower-cost alternative to the big commercial databases. Often, access to one of these platforms is already included with your membership in a state bar association.
Provides access to case law, statutes, municipal codes, and more. Many bar associations, including the Connecticut Bar Association, provide access to Casemaker with membership.
Provides access to state and federal primary legal resources. Some bar associations, including the New York Bar Association, provide access to Fastcase with membership.
Interesting fee-based features of this product include case summaries and annotations, as well as the Case Automated Research Assistant (CARA), which creates a comprehensive search from a securely uploaded document to find relevant case law that is not already cited.