Company lists · Data refreshed September 2026

Top 25 Financial api platforms worldwide

RevenueBase identified 1,452 financial api platforms worldwide as of September 2026 and tracks 210,712 professional contacts across them, including 64,094 with verified work emails. The United States is the largest market and London the largest hub.

This list covers financial api platforms worldwide, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026. Country and city lists for financial api platforms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review
1,452Companies
210,712Contacts tracked
64,094Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest financial api platforms worldwide

Ranked by team size
Top 25 of 1,452 financial api platforms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to financial api platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 202610001+80,732 contacts →

Indirect evidence

“At American Express, we know that with the right backing, people and businesses have the power to progress in incredible ways.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceJacksonville, FL, United StatesHQ checked Sep 28, 202610001+38,885 contacts →

Partial evidence

“Unlocking financial technology.”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceSouth San Francisco, CA, United StatesHQ checked Sep 28, 20265,001-10,00013,124 contacts →

Partial evidence

“Stripe builds programmable financial services.”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceChennai, IndiaHQ checked Sep 28, 20265,001-10,0007,843 contacts →

Partial evidence

“Intellect Design Arena Ltd is a global leader in enterprise-grade financial technology, delivering composable and intelligent solutions to forward-looking financial institutions…”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceBrookfield, United StatesHQ checked Sep 28, 202610001+6,608 contacts →

Indirect evidence

“First Data is now Fiserv (NASDAQ:FISV).”

Source: RevenueBase Database · checked Sep 28, 2026
6Strong evidenceAmsterdam, NetherlandsHQ checked Sep 28, 20261,001-5,0005,233 contacts →

Strong evidence

“Adyen (AMS: ADYEN) is the financial technology platform of choice for leading companies.”

Source: RevenueBase Database · checked Sep 28, 2026
7Strong evidenceHong KongHQ checked Sep 28, 20261,001-5,0002,294 contacts →

Strong evidence

“Airwallex is a leading global payments and financial platform for modern businesses, offering trusted solutions to manage everything from business account, payments, treasury, and…”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceSan Francisco, United StatesHQ checked Sep 28, 20261,001-5,0002,075 contacts →

Indirect evidence

“Headquartered in San Francisco, California, Zeta was named by Celent in 2023 as being among the likeliest partners for US banks and credit unions looking to modernize to a…”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceMontréal, QC, CanadaHQ checked Sep 28, 20261,001-5,0002,028 contacts →

Indirect evidence

“Nuvei is building the infrastructure for every payment, everywhere.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceChennai, IndiaHQ checked Sep 28, 20261,001-5,0001,560 contacts →

Indirect evidence

“Fintech happens here!”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceScottsdale, IL, United StatesHQ checked Sep 28, 20261,001-5,0001,544 contacts →

Partial evidence

“Early Warning Services, LLC, helps power payments innovation across the United States banking sector –enabling financial access, advancing reliable and fast payments for America’s…”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceBirmingham, MI, United StatesHQ checked Sep 28, 20261,001-5,0001,542 contacts →

Indirect evidence

“OneStream is how today’s Finance teams can go beyond just reporting on the past and Take Finance Further™ by steering the business to the future.”

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 28, 2026501-1,0001,410 contacts →

Partial evidence

“Plaid is a data network that powers the tools millions of people rely on to live a healthier financial life.”

Source: RevenueBase Database · checked Sep 28, 2026
14Strong evidenceSandy, UT, United StatesHQ checked Sep 28, 20261,001-5,000981 contacts →

Strong evidence

“Galileo, SoFi's Tech Platform, is a financial technology company that enables fintechs, banks, emerging and established brands to build differentiated financial solutions that…”

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceFort Lee, NJ, United StatesHQ checked Sep 28, 2026501-1,000931 contacts →

Partial evidence

“Cross River Bank provides technology infrastructure powering the future of financial services.”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceSingaporeHQ checked Sep 28, 2026501-1,000855 contacts →

Indirect evidence

“Aspire is on a mission to reinvent centuries-old corporate banking rules for modern businesses.”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceSeongnam-si (성남시), South KoreaHQ checked Sep 28, 20261,001-5,000851 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceLondon, United KingdomHQ checked Sep 28, 2026501-1,000758 contacts →

Indirect evidence

“Build Bold.”

Source: RevenueBase Database · checked Sep 28, 2026
19Partial evidenceMumbai, IndiaHQ checked Sep 28, 2026501-1,000691 contacts →

Partial evidence

“Jupiter is an all things money app with one simple aim – to deliver a financial experience that keeps pace with you.”

Source: RevenueBase Database · checked Sep 28, 2026
20Strong evidenceLondon, United KingdomHQ checked Sep 28, 2026501-1,000661 contacts →

Strong evidence

“Leading brands – from fintechs and banks to digital asset platforms and large-scale corporates – use our API to benefit from our fully regulated banking infrastructure and…”

Source: RevenueBase Database · checked Sep 28, 2026
21Partial evidenceLondon, IndiaHQ checked Sep 28, 2026201-500583 contacts →

Partial evidence

“Unlimit is the global financial infrastructure for the borderless agentic economy.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceCincinnati, OH, United StatesHQ checked Sep 28, 20261,001-5,000560 contacts →

Indirect evidence

“We are now FIS.”

Source: RevenueBase Database · checked Sep 28, 2026
23Partial evidenceMurray, UT, United StatesHQ checked Sep 28, 2026501-1,000556 contacts →

Partial evidence

“Finicity, a Mastercard company, helps individuals, families, and organizations make smarter financial decisions through safe and secure access to fast, high-quality data.”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 2026501-1,000553 contacts →

Partial evidence

“MoneyLion (part of Gen) is a leader in financial technology, powering the next generation of personalized products and content, with a top consumer finance super app, a premier…”

Source: RevenueBase Database · checked Sep 28, 2026
25Partial evidenceMumbai, IndiaHQ checked Sep 28, 2026201-500553 contacts →

Partial evidence

“1% Club is an education-led fintech platform that helps people make smarter decisions with their money.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 1,452 financial api platforms worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 64,094 reachable decision-makers.

Free signup · no credit card

View the full list →

Financial api platforms worldwide at a glance

As of Sep 28, 2026
30.4%Verified-email coverage
145.1Average contacts per company
11-50Median size (employees)
6.7%Largest-city concentration · London
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
585
11-50
559
51-200
186
201-500
56
501-1,000
26
1,001-5,000
27
5,001-10,000
6
10001+
5

Email recency is reported on each country list linked below.

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 financial api platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for financial api platforms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “financial api platforms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names financial api platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among financial api platforms, and records with no verified work email.
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 its RevenueBase Smart Search 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, 64,094 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 28, 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.

Financial api platforms by location

11 lists · largest first

Every Financial api platforms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names financial api platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many financial api platforms are there worldwide?

RevenueBase identified 1,452 financial api platforms worldwide 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?

American Express, headquartered in New York, tops this list with the largest team on record.

Which country has the most financial api platforms?

The United States leads with 259 companies, followed by India (128) and the United Kingdom (126). Every financial api platforms list by country and city is linked on this page.

Which city has the most financial api platforms?

London leads with 98 headquartered companies, followed by New York (38) and Sao Paulo (30).

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 64,094 verified decision-maker contacts tracked across these 1,452 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,452 financial api platforms worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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 Smart Search, 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.