Company lists · Data refreshed September 2026
Top 25 Legal client portal software companies based in the United States
RevenueBase identified 272 legal client portal software companies headquartered in the United States as of September 2026 and tracks 5,318 professional contacts across them, including 2,966 with verified work emails and 2,031 with mobile numbers. New York is the largest hub.
This list covers legal client portal software companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest legal client portal software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 892 | ||||
“Litera has been at the forefront of legal technology for 25+ years.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 823 | ||||
“Filevine is changing the way legal work gets done for law practitioners and their clients.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | 371 | ||||
“Neostella builds enterprise case management software for modern legal teams who need clarity, control, and connection across every part of their work.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | 211 | ||||
“Actionstep is the preferred law firm operations platform built to help modern law firms run smarter, scale faster, and stay in control.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | 195 | ||||
“For more than four decades, SurePoint® Technologies has empowered law firms to thrive in a constantly evolving legal landscape.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 145 | ||||
“Assembly Software is redefining how plaintiff law firms run their practice: combining AI-powered case management, workflow automation, and 40+ years of expertise to help firms…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 137 | ||||
“Litigation is complicated.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 124 | ||||
“Centerbase is the most customizable, cloud-based legal practice management solution that gives mid-sized firms the power to streamline their daily tasks with ease and efficiency.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 89 | ||||
“Lexicon is a legal services and technology provider with deep expertise in the legal industry.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 77 | ||||
“Paradigm offers a suite of legal software solutions that help lawyers manage, automate and grow their firms.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | SmartvaultStrong evidence | 76 | |||
“SmartVault is the leading provider of a secure, cloud-based document management and client portal platform purpose-built for accounting and tax professionals.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 70 | ||||
“At Case Status, we understand that the satisfaction of your clients is vital to the success of your law firm.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 66 | ||||
“Hona is an application that helps law firms update their clients on their case.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | 66 | ||||
“With over three decades of experience in the government tech industry, File & ServeXpress delivers trusted technology solutions that help courts, government agencies, and law…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 65 | ||||
“Founded in 2001, iCopy Legal is a trusted legal support services company specializing in record retrieval, litigation copy and print services, and virtual assistant programs…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | 53 | ||||
“PracticePanther is a leading legal practice management platform.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | 48 | ||||
“SmartAdvocate is a fully customizable, award-winning legal case management system with built-in Artificial Intelligence tools, and made to handle the challenges of today’s fast…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 47 | ||||
“Martindale-Nolo represents a joint effort by two of the most trusted and experienced leaders in the legal industry - Nolo and Martindale-Hubbell - to deliver a comprehensive…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | UpcounselPartial evidence | 42 | |||
“UpCounsel is the leading marketplace for legal services.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 20 | LawlyticsIndirect evidence | 37 | |||
“LawLytics is the website platform for small law firms.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 21 | 36 | ||||
“Tabs3 Software provides a reliable, easy-to-use, seamlessly integrated suite of software products for law firms and legal professionals, ranging from billing to practice…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 22 | 33 | ||||
“We provide innovative strategies for attorneys who need cases, NOT JUST clicks.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 23 | 30 | ||||
“Tybera builds modern digital tools for courts, improving how legal systems manage cases, documents, and filings.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 24 | Leap Legal Software USStrong evidence | 29 | |||
“LEAP’s legal practice management software combines case management, document automation, legal accounting, and billing into a single cloud-based solution for all common areas of…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 25 | 28 | ||||
“CosmoLex offers an end-to-end solution for law firms, combining matter management, firm accounting, invoicing, payments, and more.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 272 legal client portal software companies based in the United States
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Legal client portal software companies based in the United States at a glance
As of Sep 4, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among legal client portal software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “legal client portal software companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among legal client portal software companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,966 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 4, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
How many legal client portal software companies are there based in the United States?
RevenueBase identified 272 legal client portal software companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Litera, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most legal client portal software companies?
New York leads with 18 headquartered companies, followed by Chicago (10) and Los Angeles (8).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,966 verified decision-maker contacts tracked across these 272 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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