Thomson Reuters Westlaw Canada is a legal research database — it provides case law and legislation, not practice management. Atticus is the complete Ontario practice management platform that complements your research tools: matters, billing, trust accounting, and Canadian AI for your client files.
Westlaw provides legal research. Atticus manages your practice. Ontario solo and small firms typically need both — here's what Atticus adds to your practice stack.
Westlaw Canada is a legal research tool — it provides case law, legislation, and secondary sources. Atticus is the practice management layer that runs your firm: matters, time, billing, trust accounting, and AI for your specific client files. They serve different purposes; many Ontario firms need both.
Westlaw has no trust accounting. Ontario lawyers using Westlaw for research still need separate software for LSO By-Law 9 trust accounting. Atticus includes mixed trust accounts, monthly reconciliation, and trust ledger reporting — at no additional cost.
Westlaw's CoCounsel AI is optimized for researching published case law and legislation. Atticus AI reads your uploaded client documents — contracts, medical records, correspondence — and extracts limitation periods, key dates, and parties specific to your matters.
Westlaw does not track limitation periods in your client files. Atticus AI analyzes uploaded documents and flags Ontario limitation period deadlines from the Limitations Act 2002 — service dates, accident dates, breach dates — automatically extracted from your case documents.
Solo and small Ontario law firms need both research access and practice management. Atticus manages the full operational layer — client intake, matters, time tracking, HST billing, and trust accounting — at $149 CAD per lawyer per month.
Atticus stores all client files, trust records, and matter data on Canadian servers by default — aligned with LSO guidance on cloud storage of client data under Rule 3.3-1.
See how Atticus compares to Thomson Reuters Westlaw Canada for Ontario solo and small law firms — complete practice management with Canadian AI vs Canadian legal research platform.
| Feature | Atticus | Westlaw Canada |
|---|---|---|
| Practice management | ✓Full integrated practice management for all practice areas | Legal research platform only; no practice management |
| Ontario trust accounting | ✓Built-in, LSO By-Law 9 compliant; mixed trust, monthly reconciliation | No trust accounting |
| HST billing | ✓Native HST with CRA-compliant invoices built in | No billing |
| Time tracking | ✓Integrated time and billing; AI-assisted time capture | No time tracking |
| Canadian case law and legislation | ✓AI extracts case references, legislation citations, and limitation periods from your client files | Core strength: comprehensive Canadian case law, legislation, secondary sources, and AI-powered legal research (CoCounsel) |
| AI for legal research | ✓AI practice assistant knows your files; Canadian legal AI for document analysis | CoCounsel AI legal research assistant (Thomson Reuters AI); natural language search |
| Matter management | ✓Full matter lifecycle from intake to close | No matter management |
| Document management | ✓AI document analysis, summarization, entity extraction; semantic search across your files | Case law and secondary source document search; no client file document management |
| Limitation period alerts | ✓Ontario Limitations Act 2002 built in; AI extracts dates from your client documents | No limitation period tracking for client files |
| Conflict checking | ✓Automated AI-assisted conflict search | No conflict checking |
| LSO compliance | ✓Built for Ontario LSO requirements; Canadian data residency; LSO AI guidance considered | Thomson Reuters Canada; Canadian legal content; practice management compliance not included |
| Pricing (CAD) | ✓$149/lawyer/month (all-in, including AI) | Per-seat subscription; pricing varies by plan and practice area modules |
| Data residency | ✓Canadian servers for all client data by default | Thomson Reuters Canada; data hosting varies by product |
| Practice scope | ✓Manages all Ontario practice areas: matters, billing, trust, AI for every client file | Legal research across all practice areas; integration with Thomson Reuters Elite for large firms |
Keep Westlaw Canada for legal research. Add Atticus for practice management — LSO-compliant trust accounting, HST billing, AI document analysis, and limitation period tracking. $149 CAD per lawyer per month.
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