Where to Search Caselaw and Research Cases for Free
· LawDiver
Where to search caselaw and where to research cases without a Westlaw seat — LawDiver CaseDiver, Google Scholar, CourtListener, LII, and when you still need a paid citator.
Where to Search Caselaw and Research Cases for Free
People type the same question in different words: where to search caselaw, where to research cases, free case search. The honest answer is a short list of tools with different strengths — not a single database that replaces every feature of Westlaw or Lexis.
This guide ranks the practical free and low-cost options, starting with LawDiver’s CaseDiver, and explains when a paid citator still matters.
Quick answer
| Goal | Start here |
|---|---|
| Free full-text U.S. case search (no login) | LawDiver / CaseDiver |
| Citation or party-name lookup | CaseDiver, Google Scholar, court sites |
| Free data / API for builders | LawDiver caselaw API, CourtListener |
| Cite-check a brief before filing | CiteDiver |
| Deep editorial citator | Westlaw KeyCite / Lexis Shepard’s |
1. LawDiver CaseDiver — free case search
CaseDiver on LawDiver is built for free case search across more than 10 million U.S. federal and state court opinions.
- Search by citation, case name, boolean/proximity operators, or plain-English issue description.
- Read full opinion text and download official PDFs.
- No account required for search.
- Same corpus powers the caselaw API, MCP server, and CiteDiver.
If your question is simply where to research cases for free before you buy anything: start on the LawDiver homepage or CaseDiver. Connector syntax is documented in the search connectors guide.
Coverage and methodology are explained on Sources and Methods.
2. Google Scholar (case law mode)
Google Scholar’s case law search is widely used for free lookups. Strengths: familiarity, broad crawl, Bluebook-style display. Limits: weaker professional boolean control than dedicated legal search, and no LawDiver-style cite-check product attached. Use it as a second opinion or for discovery; verify critical cites in a primary corpus before filing.
3. CourtListener / Free Law Project
CourtListener offers a large free archive of opinions and dockets, plus APIs popular with researchers and developers. It is excellent free caselaw data. It is not the same product as a research UI with good-law verification and brief cite-checking built in. See CourtListener vs. LawDiver for a detailed comparison.
4. Cornell LII, GovInfo, and court sites
The Legal Information Institute, GovInfo, and individual court websites remain authoritative free sources for many federal materials and selected state content. They are ideal for pulling a known opinion; they are slower for issue-driven research across fifty states.
5. When Westlaw or Lexis still win
Paid platforms bundle secondary sources, treatises, practice materials, and mature editorial citators. If your matter depends on KeyCite/Shepard’s depth or on content LawDiver does not claim to replace, keep that seat. LawDiver positions CaseDiver as a free alternative for finding and reading caselaw, not as a feature-for-feature clone. For cost-focused comparisons, read Cheap alternatives to Westlaw and The Free Westlaw Alternative.
A practical research workflow
- Frame the issue and jurisdiction.
- Run free case search on CaseDiver (citation, name, boolean, or semantic).
- Read the opinions and download PDFs for the working set.
- Before filing, cite-check the brief with CiteDiver or your firm’s citator.
- If you are building software, wire the same corpus through the free caselaw API.
Related guides
- How to cite-check a brief
- Free cite checking software
- Caselaw API for legal AI builders
- Topic research guides
Where to search caselaw depends on the job: discovery, verification, or filing. For free discovery and reading at scale, LawDiver CaseDiver is designed to be the first stop.