Attorney Amy Goldenberg from Closter, NJ, is a secretary for the Federal Bar Association. Previously a judicial law clerk at Essex Vicinage, Amy Goldenberg of Closter, NJ, conducted legal research using LexisNexis and Westlaw.

According to a 2017 legal research survey by Clio, the U.S. legal publishing market is dominated by three firms: Westlaw (20.58 percent), Fastcase (20.35 percent), and LexisNexis (20.21 percent). Here are some details on each:

Westlaw
Westlaw markets itself as the most comprehensive database for legal information, which includes federal and circuit court cases, statutes, state regulations, bills, treatises, and public records. It also contains litigation resources and practice-area insights.

Fastcase
A relatively new entrant in the legal-research world, Fastcase is a database of legal resources that is big on functionality. It has a simple search application that lets users look up cases they already know about and an advanced search option that combines keyword, citation, and natural language filters. It scores results based on relevance, includes tags to help users look up pertinent materials, and highlights key paragraphs in legal texts for simpler use.

LexisNexis 
An established legal-research database, LexisNexis has been around for decades. It has the most recent cases and more in-depth jurisdictional data. It combines these primary sources with secondary ones, like law reviews, to assist in legal research. It also has all Supreme Court cases since 1790 and data on 80 million businesses.