Head-to-head · Legal Tech Software
Westlaw vs RelativityOne
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
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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 | ||
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| Cons |
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| 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 → |
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 →
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All legal tech software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update







