Company lists · Data refreshed September 2026

Top 25 Open source customer data platform companies based in the United States

Name: Open source customer data platform 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 5, 2026 105 companies tracked

RevenueBase identified 105 open source customer data platform companies headquartered in the United States as of September 2026 and tracks 8,151 professional contacts across them, including 4,444 with verified work emails and 3,296 with mobile numbers. New York is the largest hub.

This list covers open source customer data platform 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 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

105Companies

8,151Contacts tracked

4,444Verified emails

3,296Mobile numbers

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The 25 largest open source customer data platform companies based in the United States

Ranked by team size

Top 25 of 105 open source customer data platform companies based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names open source customer data platform 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	KlaviyoIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,789
	“Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Source: company website · checked Sep 5, 2026
2	LiverampStrong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,435
	“LiveRamp is the data collaboration platform for the world’s most innovative companies.” Source: company website · checked Sep 5, 2026
3	TealiumStrong evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	501-1,000	588
	“Tealium helps companies collect, govern, and enrich their customer data in real-time to power AI initiatives and delight customers in the moments that matter.” Source: company website · checked Sep 5, 2026
4	AmperityStrong evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	201-500	291
	“Amperity is the AI-powered Customer Data Cloud that helps brands act on real-time customer context.” Source: company website · checked Sep 5, 2026
5	FullpathIndirect evidence	Miami, FL, United StatesHQ checked Sep 5, 2026	51-200	277
	“Fullpath by Cox Automotive is the automotive industry’s AI ecosystem.” Source: company website · checked Sep 5, 2026
6	Hevo DataStrong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	201-500	265
	“Hevo is an Automated Unified Data Platform that helps companies understand their users and customers better.” Source: company website · checked Sep 5, 2026
7	GIGYAStrong evidence	Mountain View, CA, United StatesHQ checked Sep 5, 2026	201-500	222
	“Gigya is now the SAP Customer Data Cloud, part of the SAP C/4HANA Suite of Customer Experience (CX) solutions.” Source: company website · checked Sep 5, 2026
8	MarquisPartial evidence	Plano, TX, United StatesHQ checked Sep 5, 2026	201-500	195
	“Community banks and credit unions know their customers better than any big bank ever will.” Source: company website · checked Sep 5, 2026
9	SegmentStrong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	501-1,000	195
	“Segment is a customer data platform (CDP) that helps companies harness first-party customer data.” Source: company website · checked Sep 5, 2026
10	LeandataStrong evidence	Santa Clara, CA, United StatesHQ checked Sep 5, 2026	51-200	194
	“Help your teams align to your customer’s journey by uniting your CRM data, signals, and tools from the first buying signal to closed-won and beyond.” Source: company website · checked Sep 5, 2026
11	BlueconicStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	201-500	161
	“BlueConic is the leading Customer Growth Engine, helping brands unlock the full value of their customer data.” Source: company website · checked Sep 5, 2026
12	Rokt MparticleStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	501-1,000	135
	“mParticle, an end-to-end customer data platform (CDP), turns customer data into customer joy by seamlessly orchestrating the entirety of the customer data stack in real time.” Source: company website · checked Sep 5, 2026
13	OmetriaStrong evidence	London, NY, United StatesHQ checked Sep 5, 2026	51-200	127
	“Ometria is the first and only customer data experience platform (CDXP) built for retail brands.” Source: company website · checked Sep 5, 2026
14	Firsthive CDP AI Data PlatformStrong evidence	Sunnyvale, CA, United StatesHQ checked Sep 5, 2026	51-200	122
	“FirstHive is an Intelligent Customer Data Platform that builds Unique Customer Identities by ingesting data from all sources of customer interactions & transactions such as ERP…” Source: company website · checked Sep 5, 2026
15	MetabasePartial evidence	Spring Valley, CA, United StatesHQ checked Sep 5, 2026	51-200	107
	“Metabase is bringing data tools with the elegance and simplicity of consumer products to the crufty world of enterprise business intelligence.” Source: company website · checked Sep 5, 2026
16	MessagegearsStrong evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	51-200	100
	“MessageGears is the data activation and engagement platform that helps enterprises harness their data by streamlining the tech stack.” Source: company website · checked Sep 5, 2026
17	RevotasStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	51
	“Revotas is an insights-led customer experience platform trusted by over global consumer brands such as Miele, Beşiktaş, Little Caesars, Toyota, Elite World Hotels and more.” Source: company website · checked Sep 5, 2026
18	CINCHStrong evidence	Salt Lake City, UT, United StatesHQ checked Sep 5, 2026	11-50	49
	“Cinch is a customer data experience platform built for B2C marketing teams ready to grow customer value, not just chase transactions.” Source: company website · checked Sep 5, 2026
19	BRIJStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	11-50	49
	“Brij’s AI-powered software platform helps brands acquire, analyze, and activate first-party data across every sales channel.” Source: company website · checked Sep 5, 2026
20	B2metricPartial evidence	Dover, DE, United StatesHQ checked Sep 5, 2026	11-50	49
	“Act on your data.” Source: company website · checked Sep 5, 2026
21	Hansa Marketing ServicesStrong evidence	Chicago, OR, United StatesHQ checked Sep 5, 2026	11-50	43
	“Hansa is a CDP agency that helps companies make their email more data-driven so they can create better customer experiences and keep customers buying.” Source: company website · checked Sep 5, 2026
22	ExperitureStrong evidence	Brooklyn, NY, United StatesHQ checked Sep 5, 2026	51-200	40
	“Experiture empowers businesses to harness the full potential of their customer data for marketing through our leading-edge Customer Engagement Platform.” Source: company website · checked Sep 5, 2026
23	MsightsStrong evidence	Charlotte, NC, United StatesHQ checked Sep 5, 2026	11-50	40
	“Founded in 2004, MSIGHTS is a cloud-based marketing data platform that helps enterprise marketers unify, manage, and operationalize their data for smarter decision-making.” Source: company website · checked Sep 5, 2026
24	MetarouterPartial evidence	Cincinnati, CO, United StatesHQ checked Sep 5, 2026	11-50	38
	“MetaRouter is the first-mile Customer Context Infrastructure that captures identity, behavior, and consent, in real time, inside the enterprise's own cloud, before the moment is…” Source: company website · checked Sep 5, 2026
25	BIKKYStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	11-50	36
	“Bikky is the first Customer Data Platform (CDP) built exclusively for large, multi-unit restaurant brands.” Source: company website · checked Sep 5, 2026

Showing 25 of 105 open source customer data platform companies based in the United States

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Open source customer data platform companies based in the United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

New YorkLargest hub · 16 HQs

3,296Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Verified emails by last verification

0–30

4,145

31–60

270

61–90

90–180

180+

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 open source customer data platform 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 “open source customer data platform 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 open source customer data platform 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, 4,444 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.

Frequently asked

How many open source customer data platform companies are there based in the United States?

RevenueBase identified 105 open source customer data platform 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?

Klaviyo, headquartered in Boston, tops this list with the largest team on record.

Which city has the most open source customer data platform companies?

New York leads with 16 headquartered companies, followed by San Francisco (16) and Boston (6).

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 4,444 verified decision-maker contacts tracked across these 105 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.