Free Case Law Search Alternatives, and When to Upgrade

Is CourtListener a good substitute for Westlaw or LexisNexis?

For finding opinions, largely yes, and that surprises people who assume free means thin. The Free Law Project integrated the full Harvard Caselaw Access Project collection into CourtListener in March 2024, which put a corpus covering more than 99 percent of precedential published American case law behind a free search box. Its RECAP archive is separately the largest open collection of federal docket data anywhere. If your objection to free databases was coverage, that objection is largely out of date.

For finishing the research, no, and the gap is specific rather than general. Westlaw and LexisNexis are not primarily selling you opinions. They are selling KeyCite and Shepard's, editorial headnotes, and the confidence that a red flag will appear when a case has been overruled. CourtListener gives you Authorities and Cited By lists, which tell you which opinions cite which, but nobody has read those citing cases and classified them as following, distinguishing, or overruling. That classification is editorial work, and it is what the subscription actually buys.

The practical risk is asymmetric. Missing a case costs you time. Citing a case that was overruled costs you credibility with a judge, and potentially more. That is why a free-only workflow is fine for reading and orientation and risky as the last step before filing. Our guide on checking whether a case is still good law covers how to close that gap manually, and what a citator is explains what the editorial layer does.