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What is Westlaw?

Westlaw is a comprehensive legal research and analytics platform developed by Thomson Reuters for attorneys, legal researchers, government agencies, and corporate legal departments. The platform provides searchable access to case law, statutes, regulations, administrative decisions, and secondary legal materials used in legal research and litigation preparation. Its search technology allows users to locate relevant authorities through natural language queries, Boolean searches, citations, and subject-based navigation. The West Key Number System organizes legal principles into a structured classification system that helps researchers identify related cases addressing specific legal issues. Attorney-written headnotes and editorial summaries provide additional context for evaluating court decisions and understanding their legal significance. KeyCite enables users to verify the validity of cases, statutes, and regulations while reviewing citing references, subsequent treatment, and potential overruling risks. Westlaw Edge includes AI-assisted research that generates synthesized answers grounded in Westlaw content and links users to supporting legal authorities. Quick Check analyzes uploaded briefs and other legal documents to identify potentially invalid citations, overlooked precedents, and authorities that may weaken an argument. Litigation Analytics provides data-driven insights into judges, courts, attorneys, law firms, case outcomes, and damages to support litigation strategy and case evaluation. Additional capabilities include AI Jurisdictional Surveys, Statutes Compare, Regulations Compare, and precision research tools for investigating legal issues across jurisdictions. Westlaw Advantage extends the platform with agentic AI capabilities, Deep Research, litigation document analysis, and research workflows designed to help legal professionals move from finding relevant authorities to developing legal strategies.

What is Decisis?

The time of unreliable citators, frustrating searches, and limited resources for legal research is now a thing of the past. Decisis simplifies the process by providing essential tools needed to win your cases while filtering out unnecessary information. With its intuitive design and rapid, reliable results, Decisis proves to be the perfect choice for bar associations and small law firms alike. It includes a comprehensive and credible legal research database that is exactly what you have been looking for. Unlike many free legal research platforms that leave you questioning the credibility of the cases you find due to inferior citators, Decisis features a superior citator that exceeds those available in Fastcase or Casetext. Challenges such as poor user interfaces, insufficient search filters, and irrelevant results can hinder your access to crucial cases that support your arguments. With Decisis, you are presented with a sophisticated legal research system that offers tailored search filters to yield highly relevant results from a vast primary law database. Furthermore, the platform is committed to ongoing enhancements, ensuring that your research remains both effective and efficient. By consistently evolving its features, Decisis helps you stay ahead in the dynamic landscape of legal research.

Media

Media

Integrations Supported

Deadline Assistant
OpenAdapt

Integrations Supported

API Availability

API Availability

Pricing Information

$75 per month

Pricing Information

Pricing not provided

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Standard Support
Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
Webinars
Online Training

Company Facts

Organization Name

Thomson Reuters

Date Founded

2008

Company Location

Canada

Company Website

legal.thomsonreuters.com/en/westlaw

Company Facts

Organization Name

Vizigy Interactive

Date Founded

2005

Company Location

United States

Company Website

www.decisislaw.com

Categories and Features

Legal

Not specified

Legal Research

Not specified

Personal Injury Law

Not specified

Categories and Features

Legal Research

Not specified

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