- 3M
- Akin Gump Strauss Hauer & Feld
- Arnold & Porter
- Baker & McKenzie
- Bryan Cave
- Covington & Burling
- Cravath, Swaine & Moore
- Dorsey & Whitney
- Drinker Biddle & Reath
- Fulbright & Jaworski
- Hughes Hubbard & Reed
- Irell & Manella
- Jackson Walker
- Jones Day
- Mayer, Brown, Rowe & Maw
- Nelson Mullins Riley & Scarborough
- Nixon Peabody
- O’Melveny & Myers
- Orrick, Herrington & Sutcliffe
- Paul, Hastings, Janofsky & Walker
- Paul, Weiss, Rifkind, Wharton & Garrison
- Reed Smith
- Shearman & Sterling
- Shook, Hardy & Bacon
- Sidley Austin Brown & Wood
- Sullivan & Cromwell
- Venable
- Vinson & Elkins
- Weil, Gotshal & Manges
- White & Case
- Williams & Connolly
- Wilmer Cutler Pickering
- Winston & Strawn
Internationally, Ringtail Legal is used by some of the world's largest law firms and government agencies, including the following:
- Allen & Overy, UK
- Arthur Robinson Hedderwicks, Australia
- Ashursts, UK
- Australia Attorney General
- Australian Federal Courts
- Australian Securities and Investment Commission
- Baker McKenzie, Australia
- Barsalou Lawson, Canada
- Berwin Leighton, UK
- Blake Dawson & Waldron, Australia
- British Columbia Attorney General, Canada
- Canadian Competition Bureau
- Canadian Department of Foreign Affairs
- Canadian Department of Justice
- Chapman Tripp, New Zealand
- Clayton Utz, Australia
- Corrs Chambers Westgarth, Australia
- Deacons Graham Jones, Australia
- Ebsworths, Australia
- Eversheds, UK
- Federal Court of Australia
- Freehills, Australia
- Gilbert & Tobin, Australia
- Herbert Smith, UK
- Lovells, UK
- Mallesons Stephen Jaques, Australia
- Middletons Moore & Bevins, Australia
- Minter Ellison, Australia
- Nabarro Nathanson, UK
- New South Wales State Court, Australia
- Norton Rose, UK
- NSW District and Supreme Courts, Australia
- Royal Canadian Mounted Police
- Russell McVeigh, New Zealand
- Telstra Corporate Legal Department, Australia
- Victorian State Courts, Australia
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