Company lists · Data refreshed September 2026

Top 22 Payment integration software companies based in New York, United States

Name: Payment integration software companies based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 64 companies tracked

RevenueBase identified 64 payment integration software companies headquartered in New York, United States as of September 2026 and tracks 1,679 professional contacts across them, including 913 with verified work emails. New York is the largest hub.

This list covers payment integration software companies headquartered in New York, 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 5, 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 5, 2026 86% judged on-target in blind review

64Companies

1,679Contacts tracked

913Verified emails

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The 22 largest payment integration software companies based in New York, United States

Ranked by team size

Top 22 of 64 payment integration software companies based in New York, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names payment integration 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	2checkoutPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	121
	“2Checkout is the digital commerce & payments provider that helps companies sell their products and services via multiple channels, acquire customers across multiple touch points…” Source: company website · checked Sep 5, 2026
2	CardflightPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	87
	“CardFlight is committed to making payment acceptance easy for business owners.@SwipeSimple, our signature product, is used by more than small business across the US.” Source: company website · checked Sep 5, 2026
3	KNOTIndirect evidence	New York, United StatesHQ checked Sep 5, 2026	11-50	42
	“Knot is the first merchant connectivity platform offering card-on-file switching for hundreds of online merchant accounts.” Source: company website · checked Sep 5, 2026
4	BreezeIndirect evidence	New York, United StatesHQ checked Sep 5, 2026	51-200	39
	“At the heart of everything we do is a simple belief, moving money should be effortless.” Source: company website · checked Sep 5, 2026
5	United ThinkersPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	36
	“United Thinkers specializes in providing cutting-edge payment solutions, with a focus on empowering payment facilitators, payment aggregators, and other businesses seeking…” Source: company website · checked Sep 5, 2026
6	BEVELIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	23
	“Bevel is a nationwide leader in the credit card processing industry, providing cost-saving solutions for a wide range of merchant accounts, including retail, restaurant…” Source: company website · checked Sep 5, 2026
7	SensepassPartial evidence	New York, United StatesHQ checked Sep 5, 2026	11-50	21
	“SensePass revolutionize the way we shop by offering merchants an omni-channel payment orchestration platform that unlocks 100+ payment methods, enabling a seamless checkout…” Source: company website · checked Sep 5, 2026
8	FLEXAIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	11-50	21
	“Flexa offers new tools for commerce.” Source: company website · checked Sep 5, 2026
9	Epay World LLCPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	19
	“Who we are: Epay World is a full service payment processing company, specializing in processing services for Visa, MasterCard, American Express, Discover, Diners Club, EBT, and…” Source: company website · checked Sep 5, 2026
10	Diameter PAYPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	11-50	17
	“Diameter provides embedded payments to banks and financial institutions, with a focus on stablecoin related payments.” Source: company website · checked Sep 5, 2026
11	Orum.io We VE Joined StripePartial evidence	New York, United StatesHQ checked Sep 5, 2026	51-200	14
	“Orum transforms payment technology for businesses, revolutionizing payment speed, certainty, and orchestration through unified API-based solutions.” Source: company website · checked Sep 5, 2026
12	OLLIEIndirect evidence	New York, United StatesHQ checked Sep 5, 2026	11-50	14
	“Ollie was created to transform the way companies use technology in e-commerce, offering innovative solutions that ensure flexibility, efficiency and total control over digital…” Source: company website · checked Sep 5, 2026
13	XformativePartial evidence	New York, United StatesHQ checked Sep 5, 2026	11-50	12
	“Xformative transforms complexity into simplicity providing dynamic smart payment technology, real-time interactive balancing and innovation to support flexibility, speed and…” Source: company website · checked Sep 5, 2026
14	Navidor Payment SolutionsPartial evidence	New York, United StatesHQ checked Sep 5, 2026	11-50	12
	“Navidor Merchant Services offers personalized payments solutions to US and international merchants.” Source: company website · checked Sep 5, 2026
15	QuidkeyPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1-10	11
	“Card payments are costing online merchants 2-3% on every transaction - on top of chargebacks, fraud disputes and settlement delays.” Source: company website · checked Sep 5, 2026
16	KadepayPartial evidence	New York, United StatesHQ checked Sep 5, 2026	11-50	8
	“KadePay, the obvious payment solution, offers innovative ways to pay and get paid, both in person and remotely.” Source: company website · checked Sep 5, 2026
17	SlidepayPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1-10	7
	“The payment professionals at SlidePay have been creating payment solutions for all business types for over a decade.” Source: company website · checked Sep 5, 2026
18	SeamlesspayStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	11-50	6
	“Provide full stack payment software to merchants that includes: payment gateway / processing, reporting, analytics, gift & loyalty and more.” Source: company website · checked Sep 5, 2026
19	Feenix Payment SystemsPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1-10	6
	“Founded in 2017, Feenix Payments is a premier provider of payment processing and merchant services, built to serve modern businesses with integrity, transparency, and performance.” Source: company website · checked Sep 5, 2026
20	Entelechy MerchantsPartial evidence	New York, United StatesHQ checked Sep 5, 2026	1-10	4
	“Headquartered in Wyoming and Montreal we have been working hard to provide the best customer support possible and make accepting payments simple and understandable by merchants in…” Source: company website · checked Sep 5, 2026
21	FingridPartial evidence	New York, United StatesHQ checked Sep 5, 2026	11-50	3
	“We build payment processing tools for online and in-person merchants to accept instant bank-to-bank payments in real-time during customer checkouts.” Source: company website · checked Sep 5, 2026
22	EquepayPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	11-50	3
	“At Equepay, we believe payments should be simple, so you can focus on what truly matters - your business.” Source: company website · checked Sep 5, 2026

Showing 22 of 64 payment integration software companies based in New York, United States

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Payment integration software companies based in New York, United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

New YorkLargest hub · 64 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for New York, over 64 companies.

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 payment integration 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 New York, United States whose own description of what they do matches “payment integration 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 payment integration software companies, and records with no verified work email. Companies headquartered outside New York 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, 913 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 5, 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.

Payment integration software companies by metro in the United States

Payment integration software companies in New York64
Payment integration software companies in Los Angeles35
Payment integration software companies in Atlanta34
Payment integration software companies in Miami32
Payment integration software companies in San Francisco28
Payment integration software companies in Las Vegas25

Frequently asked

How many payment integration software companies are there based in New York, United States?

RevenueBase identified 64 payment integration software companies headquartered in New York, 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?

2checkout, headquartered in New York, tops this list with the largest team on record.

Which city has the most payment integration software companies?

New York leads with 64 headquartered companies, followed by Los Angeles (35) and Atlanta (34).

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 913 verified decision-maker contacts tracked across these 64 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 5, 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.