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Head-to-head · Legal Tech Software

Westlaw vs RelativityOne

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Westlaw #1 in Legal Tech Software 9.3/10 Pricing on request · 7-day trial Free trial✓ 0 of 6 features Visit Westlaw
RelativityOne #5 in Legal Tech Software 8.4/10 Pricing on request ✓ 0 of 6 features Visit Relativity

Westlaw leads on 0 checks, RelativityOne on 0, and 1 is even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreWestlaw · 9.3/10
  • Free trialonly Westlaw

Westlaw scores higher on our rubric for legal tech software: 9.3 against 8.4 out of 10; our editors rank them #1 and #5.

Westlaw is the better fit for U.S. legal teams needing comprehensive research. RelativityOne is the better fit for enterprise teams needing cloud e-discovery.

  • Westlaw fits best

    U.S. legal teams needing comprehensive research

  • RelativityOne fits best

    Enterprise teams needing cloud e-discovery

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Westlaw 9.3/10 Visit ↗ RelativityOne 8.4/10 Visit ↗
At a glance
Editor score 9.3 8.4
Ranking #1 in Legal Tech Software #5 in Legal Tech Software
Best for U.S. legal teams needing comprehensive research Enterprise teams needing cloud e-discovery
Pricing model Paid Paid
Starting price Pricing on request · 7-day trial Pricing on request
Free plan — —
Free trial 7 days —
Deployment Cloud Cloud
Platforms Web Web
Support Live chat, Phone, Docs · 24/7 Phone, Docs · 24/7
Integrations 2 integrations 11 integrations
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Westlaw 0/6 · RelativityOne 0/6
Matter management Not checked yet Not checked yet
Document automation Not checked yet Not checked yet
Time and billing Not checked yet Not checked yet
E-signatures Not checked yet Not checked yet
Legal research Not checked yet Not checked yet
Client portal Not checked yet Not checked yet
Specs
Deployment Not checked yet Not checked yet
Our review
Pros
  • Searches state and federal primary law, secondary sources, briefs, and dockets
  • KeyCite checks citation treatment and helps find related cases
  • Litigation analytics covers judges, courts, attorneys, firms, and case types
  • Covers legal hold, collection, processing, review, redaction, and production
  • Connects to sources including Microsoft 365, Slack, Box, and Google Workspace
  • Includes email threading, AI-assisted review, and automated redaction
Cons
  • Subscription pricing is handled through plan-specific pages or sales assistance
  • AI tools are available only in applicable offerings
  • The platform is web-based, with no other platform listed
  • Pricing requires contacting sales
  • Cloud-only deployment may not suit teams needing another deployment model
  • Its broad workflow may exceed the needs of teams seeking a narrow review tool
Our verdict

Westlaw, from Thomson Reuters, is a legal research platform for legal professionals who need to find and analyze U.S. law. Its searchable materials span state and federal case law, statutes, regulations, court rules, administrative…

Read the review →

RelativityOne brings legal hold, enterprise data collection, processing, analytics, document review, redaction, and production into a cloud e-discovery platform. It is aimed at law firms, corporations, and legal service providers managing…

Read the review →
  1. WestlawLegal Tech Software 9.3Pricing on request · 7-day trial
  2. RelativityOneLegal Tech Software 8.4Pricing on request

Strengths and trade-offs

  • Westlaw — where it wins

    • Searches state and federal primary law, secondary sources, briefs, and dockets
    • KeyCite checks citation treatment and helps find related cases
    • Litigation analytics covers judges, courts, attorneys, firms, and case types

    Where it doesn't

    • Subscription pricing is handled through plan-specific pages or sales assistance
    • AI tools are available only in applicable offerings
    • The platform is web-based, with no other platform listed
  • RelativityOne — where it wins

    • Covers legal hold, collection, processing, review, redaction, and production
    • Connects to sources including Microsoft 365, Slack, Box, and Google Workspace
    • Includes email threading, AI-assisted review, and automated redaction

    Where it doesn't

    • Pricing requires contacting sales
    • Cloud-only deployment may not suit teams needing another deployment model
    • Its broad workflow may exceed the needs of teams seeking a narrow review tool
  • Westlaw9.3/10 · Pricing on request · 7-day trial

    A broad U.S. legal research service with citation checking and AI tools in applicable offerings.

    Visit WestlawFull verdict →
  • RelativityOne8.4/10 · Pricing on request

    A broad cloud e-discovery workflow for legal teams handling enterprise data.

    Visit RelativityFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update