Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Legal Research Software

Westlaw vs HeinOnline

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Westlaw #1 in Legal Research Software 9.4/10 Pricing on request · 7-day trial Free trial✓ 6 of 6 features Visit Westlaw
HeinOnline #30 in Legal Research Software 6.0/10 Pricing on request ✓ 5 of 6 features Visit HeinOnline

Westlaw leads on 0 checks, HeinOnline on 0, and 7 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreWestlaw · 9.4/10
  • Free trialonly Westlaw
  • Most featuresWestlaw · 6 of 6

Westlaw scores higher on our rubric for legal research software: 9.4 against 6.0 out of 10; our editors rank them #1 and #30.

Westlaw is the better fit for full-service U.S. legal research. HeinOnline is the better fit for deep legal literature and source research.

  • Westlaw fits best

    Full-service U.S. legal research

  • HeinOnline fits best

    Deep legal literature and source research

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 9.4/10 Visit ↗ HeinOnline 6.0/10 Visit ↗
At a glance
Editor score 9.4 6.0
Ranking #1 in Legal Research Software #30 in Legal Research Software
Best for Full-service U.S. legal research Deep legal literature and source research
Pricing model Paid Paid
Starting price Pricing on request · 7-day trial Pricing on request
Free plan — Not checked yet
Free trial 7 days —
Deployment Cloud Cloud
Platforms Web Web
Integrations 2 integrations 5 integrations
Features Westlaw 6/6 · HeinOnline 5/6
Case law search ✓ ✓
Statute & regulation search ✓ ✓
Docket search ✓ (best) Not checked yet
Legal commentary ✓ ✓
Citation tools ✓ ✓
Research alerts ✓ ✓
Specs
Jurisdiction coverage United States: state and federal jurisdictions United States federal and state, Canada, Australia, United Kingdom, Ireland, and international law
Our review
Pros
  • Broad federal and state primary-law and secondary-source coverage
  • KeyCite, alerts, dockets, and litigation analytics in one platform
  • AI-powered Deep Research and document analysis capabilities
  • Extensive full-text databases across legal and government materials
  • Citation navigation, ScholarCheck, alerts, and research organization tools
  • Five integrations, including CourtListener, Fastcase, and Zotero
Cons
  • Pricing requires contact with sales and varies by plan and configuration
  • Access is delivered through the web platform
  • Its scope is centered on U.S. federal and state jurisdictions
  • Institution-priced annual subscriptions require a sales conversation
  • Web-only access may not suit teams needing other platforms
  • Its feature set centers on research rather than docket workflows
Our verdict

Westlaw is Thomson Reuters’ online legal research platform for attorneys, law firms, government agencies, courts, and other legal professionals. It combines searchable state and federal case law with statutes, regulations, court rules,…

Read the review →

HeinOnline is a web-based legal research platform for law libraries, universities, government organizations, and other institutions. Its collections cover law journals, government documents, statutes, regulations, legislative histories,…

Read the review →
  1. WestlawLegal Research Software 9.4Pricing on request · 7-day trial
  2. HeinOnlineLegal Research Software 6.0Pricing on request

Strengths and trade-offs

  • Westlaw — where it wins

    • Broad federal and state primary-law and secondary-source coverage
    • KeyCite, alerts, dockets, and litigation analytics in one platform
    • AI-powered Deep Research and document analysis capabilities

    Where it doesn't

    • Pricing requires contact with sales and varies by plan and configuration
    • Access is delivered through the web platform
    • Its scope is centered on U.S. federal and state jurisdictions

  • HeinOnline — where it wins

    • Extensive full-text databases across legal and government materials
    • Citation navigation, ScholarCheck, alerts, and research organization tools
    • Five integrations, including CourtListener, Fastcase, and Zotero

    Where it doesn't

    • Institution-priced annual subscriptions require a sales conversation
    • Web-only access may not suit teams needing other platforms
    • Its feature set centers on research rather than docket workflows
  • Westlaw9.4/10 · Pricing on request · 7-day trial

    A broad core research platform for legal professionals handling complex U.S. matters.

    Visit WestlawFull verdict →
  • HeinOnline6.0/10 · Pricing on request

    A deep institutional research platform with broad sources, citation tools, alerts, and AI summaries.

    Visit HeinOnlineFull verdict →

More comparisons

All legal research software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update