Company lists · Data refreshed September 2026

Top 25 Insurance underwriting software companies based in the United States

Name: Insurance underwriting software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 438 companies tracked

RevenueBase identified 438 insurance underwriting software companies headquartered in the United States as of September 2026 and tracks 32,437 professional contacts across them, including 15,518 with verified work emails and 10,518 with mobile numbers. New York is the largest hub.

This list covers insurance underwriting 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

438Companies

32,437Contacts tracked

15,518Verified emails

10,518Mobile numbers

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The 25 largest insurance underwriting software companies based in the United States

Ranked by team size

Top 25 of 438 insurance underwriting software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names insurance underwriting software companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	VertaforePartial evidence	Denver, NY, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,865
	“We believe insurance is about relationships.” Source: company website · checked Sep 4, 2026
2	Applied SystemsPartial evidence	Chicago, IL, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,233
	“For more than 40 years, Applied Systems has created innovative technology for the global insurance industry.” Source: company website · checked Sep 4, 2026
3	ZinniaPartial evidence	Greenwich, KS, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,905
	“Zinnia, an Eldridge Industries business, simplifies L&A insurance by delivering comprehensive technology solutions for the industry’s most critical needs.” Source: company website · checked Sep 4, 2026
4	USLIStrong evidence	Wayne, CO, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,314
	“We aspire to be the very best insurance company at underwriting insurance products for our customers.” Source: company website · checked Sep 4, 2026
5	ISOStrong evidence	Jersey City, NJ, United StatesHQ checked Sep 4, 2026	5,001-10,000	1,095
	“Underwriting solutions at Verisk is a leading provider of advanced tools and analytics for the property/casualty and life insurance industries.” Source: company website · checked Sep 4, 2026
6	InsurityStrong evidence	Hartford, CT, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,005
	“Insurity is a leading provider of cloud-based software for insurance carriers, brokers, and MGAs.” Source: company website · checked Sep 4, 2026
7	IpipelinePartial evidence	Wayne, PA, United StatesHQ checked Sep 4, 2026	501-1,000	854
	“iPipeline is a leading global provider of comprehensive and integrated digital solutions for the life insurance and financial services industries in North America, and life…” Source: company website · checked Sep 4, 2026
8	IllumifinStrong evidence	Woodbury, MN, United StatesHQ checked Sep 4, 2026	1,001-5,000	785
	“illumifin is a true partner to the insurance industry, delivering tech-enabled business processing services and essential software solutions to help transform insurers for…” Source: company website · checked Sep 4, 2026
9	ZywaveIndirect evidence	Milwaukee, WI, United StatesHQ checked Sep 4, 2026	501-1,000	747
	“At Zywave, we don’t just build technology-we amplify impact.” Source: company website · checked Sep 4, 2026
10	OneshieldIndirect evidence	Marlborough, MA, United StatesHQ checked Sep 4, 2026	201-500	506
	“OneShield provides business solutions for P&C insurers and MGAs of all sizes.” Source: company website · checked Sep 4, 2026
11	OIP InsurtechStrong evidence	Henderson, NV, United StatesHQ checked Sep 4, 2026	1,001-5,000	497
	“OIP Insurtech is a global insurance infrastructure company transforming specialty insurance operations through AI, underwriting intelligence, and operational execution systems.” Source: company website · checked Sep 4, 2026
12	ReservIndirect evidence	New York City, United StatesHQ checked Sep 4, 2026	501-1,000	400
	“Reserv leverages modern systems and creates new cutting-edge solutions to optimize any P&C claim.” Source: company website · checked Sep 4, 2026
13	StratusIndirect evidence	Shrewsbury, NJ, United StatesHQ checked Sep 4, 2026	501-1,000	367
	“At Stratus, people are at the heart of everything we do.” Source: company website · checked Sep 4, 2026
14	Atlantic Casualty Insurance COPartial evidence	Goldsboro, CT, United StatesHQ checked Sep 4, 2026	201-500	337
	“Atlantic Casualty Insurance Company (Atlantic Casualty) was formed by Strickland Insurance Group (SIG) in 1983 to underwrite a substantial book of non-standard personal auto.” Source: company website · checked Sep 4, 2026
15	SureifyPartial evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	201-500	266
	“Sureify’s modular enterprise product suite, Lifetime, revolutionizes the life insurance industry by delivering cutting-edge user experiences.” Source: company website · checked Sep 4, 2026
16	Bold PenguinPartial evidence	Columbus, OH, United StatesHQ checked Sep 4, 2026	201-500	252
	“Bold Penguin is the market-leading digital solutions provider for commercial insurance.” Source: company website · checked Sep 4, 2026
17	BestowPartial evidence	Dallas, TX, United StatesHQ checked Sep 4, 2026	51-200	231
	“Bestow partners with top life insurance carriers to deploy cutting-edge technology and data solutions that reduce costs, maximize efficiency, and drive growth by streamlining…” Source: company website · checked Sep 4, 2026
18	DYADIndirect evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	201-500	230
	“Say hello to Dyad.” Source: company website · checked Sep 4, 2026
19	InjalaPartial evidence	Irving, TX, United StatesHQ checked Sep 4, 2026	51-200	198
	“Injala builds risk management insurtech solutions and provides businesses with AI-driven software and support to streamline and reduce time-consuming errors in current industry…” Source: company website · checked Sep 4, 2026
20	InforceIndirect evidence	Cleveland, OH, United StatesHQ checked Sep 4, 2026	201-500	196
	“At INFORCE, we go above and beyond typical systems integration and technology consulting firms.” Source: company website · checked Sep 4, 2026
21	Ategrity Specialty Insurance CompanyIndirect evidence	New York, NY, United StatesHQ checked Sep 4, 2026	51-200	190
	“Combining state-of-the-art technology solutions with a total, customer-centered commitment to service, Ategrity empowers streamlined decision-making with easy, responsive…” Source: company website · checked Sep 4, 2026
22	AgentsyncPartial evidence	Denver, CO, United StatesHQ checked Sep 4, 2026	201-500	188
	“AgentSync builds modern insurance infrastructure that connects carriers, agencies, MGAs, and producers.” Source: company website · checked Sep 4, 2026
23	SunfireStrong evidence	Remote, United StatesHQ checked Sep 4, 2026	51-200	182
	“SunFire is a profitable, well-capitalized software and services company providing transformative and proven technology solutions for the Medicare Insurance market.” Source: company website · checked Sep 4, 2026
24	JBKIndirect evidence	College Station, TX, United StatesHQ checked Sep 4, 2026	201-500	177
	“JBK is a team of professionals building great technology for the business world since 2001.” Source: company website · checked Sep 4, 2026
25	Jarus TechnologiesIndirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 4, 2026	51-200	161
	“Jarus accelerates the digital transformation of business processes by leveraging a modular approach towards system architecture.” Source: company website · checked Sep 4, 2026

Showing 25 of 438 insurance underwriting software companies based in the United States

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Insurance underwriting software companies based in the United States at a glance

As of Sep 4, 2026

11-50Median size (employees)

New YorkLargest hub · 24 HQs

10,518Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

133

11-50

170

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Verified emails by last verification

0–30

31–60

1,440

61–90

8,418

90–180

5,552

180+

108

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 insurance underwriting 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 “insurance underwriting 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 insurance underwriting 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, 15,518 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 insurance underwriting software companies are there based in the United States?

RevenueBase identified 438 insurance underwriting 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?

Vertafore, headquartered in Melville, tops this list with the largest team on record.

Which city has the most insurance underwriting software companies?

New York leads with 24 headquartered companies, followed by Boston (10) and San Francisco (10).

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 15,518 verified decision-maker contacts tracked across these 438 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.