Online Payments Software | Theorem

Theorem.

The most comprehensive directory of companies, tools and services in legaltech.

Stay in the loop

Get updates on legal tech, provider opportunities, and Theorem news.

Solutions

Marketplace
Theorem RFP
Stack Manager

For Providers

Provider Network
Marketplace Opportunities
Provider Support

Company

About Us
Blog
Contact

Legal

Privacy Policy
Terms of Service

© 2026, Theorem LTS, Inc. – New York, New York. All rights reserved.

Filters

Browse software
by topic

Artificial Intelligence & Agents Contract Software Legal Operations Privacy, Cybersecurity & Information Governance Intellectual Property (IP) & Innovation Document Management, Drafting & Automation Legal Spend, Finance, Billing & Procurement Litigation, eDiscovery, Investigations & Disputes Workflow Automation & Process Management

Home›Products

Category

Online Payments

8

GRC / Security & Compliance

548

Legal AI Platforms

451

Compliance

450

Litigation

362

Litigation Management

321

Contract Management

310

Document Management

298

Best For

Law Firms (All Sizes)

2

Large Law Firms

1

Mid Size Law Firm

1

Small Law firms

1

Sole practitioners

1

Integrates With

G Suite

2

Intuit QuickBooks®

2

Microsoft Outlook

2

ActionStep

1

Aderant Expert

1

Box

1

Case.one

1

CaseFox

1

Available In

United States

7

8 results

LawPay

The legal payment experts. LawPay makes it easy for firms to accept credit cards & manage their practice with robust payment solution

Rocket Matter

Law Practice Management

Rocket Matter's cloud-based legal case management software will increase your law practice's productivity and efficiency.

Big Time Software Inc

The access-anywhere operating system behind the greatest consulting firms on the planet - time and billing.

Legl

Online Payments

Legl offers one platform for client payments, onboarding and compliance. Legal tech for a great client experience.

IntelliPay

IntelliPay is a powerful suite of payment tools that enable you to accept, initiate, process, and manage payments.

QuickFee

Legal Spend Management

Flexible payment and credit solutions designed specifically for professional service firms.

ClientPay

Payment Processing

Our cloud-based technology enables smooth, simple, and secure payment processing.

Bill4Time

Time Billing Software by Bill4time. The simple & accurate solution to track time online.