Company lists · Data refreshed September 2026

Top 25 Vendor engagement platforms based in the United States

Name: Vendor engagement platforms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 648 companies tracked

RevenueBase identified 648 vendor engagement platforms headquartered in the United States as of September 2026 and tracks 14,143 professional contacts across them, including 6,123 with verified work emails and 4,212 with mobile numbers. New York is the largest hub.

This list covers vendor engagement platforms 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 6, 2026.

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 6, 2026 86% judged on-target in blind review

648Companies

14,143Contacts tracked

6,123Verified emails

4,212Mobile numbers

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The 25 largest vendor engagement platforms based in the United States

Ranked by team size

Top 25 of 648 vendor engagement platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to vendor engagement 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Icertis	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,337 contacts →
	Indirect evidence “Icertis is the AI-native contract intelligence company that turns enterprise strategy into faster execution at scale.” Source: RevenueBase Database · checked Sep 6, 2026
2	Jaggaer	Indirect evidence	Durham, NC, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,286 contacts →
	Indirect evidence “JAGGAER is a global leader in enterprise procurement and supplier collaboration, and the catalyst for enhancing human decision-making to accelerate business outcomes.” Source: RevenueBase Database · checked Sep 6, 2026
3	ISN	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 6, 2026	501-1,000	1,082 contacts →
	Indirect evidence “Established in 2001, ISN® is the global leader in contractor and supplier management.” Source: RevenueBase Database · checked Sep 6, 2026
4	Bigcommerce	Partial evidence	Austin, TX, United StatesHQ checked Sep 6, 2026	1,001-5,000	746 contacts →
	Partial evidence “BigCommerce, powered by Commerce (Nasdaq: CMRC), is the flexible enterprise ecommerce platform built for growth without compromise.” Source: RevenueBase Database · checked Sep 6, 2026
5	Compliancequest	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 6, 2026	501-1,000	481 contacts →
	Indirect evidence “and Supplier Relationship Significantly improve an organization’s culture, collaboration, competency, efficiency, performance and innovation through the digital transformation of…” Source: RevenueBase Database · checked Sep 6, 2026
6	Partssource INC	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 6, 2026	201-500	401 contacts →
	Partial evidence “PartsSource is the leading evidence-based B2B vertical marketplace and supply chain software platform used by the healthcare provider and supplier ecosystem to improve essential…” Source: RevenueBase Database · checked Sep 6, 2026
7	Hireart	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	51-200	281 contacts →
	Partial evidence “HireArt is the first platform that gives companies all of the tools they need to manage their own contract workforces.” Source: RevenueBase Database · checked Sep 6, 2026
8	ORO Labs	Indirect evidence	Mountain View, CA, United StatesHQ checked Sep 6, 2026	201-500	250 contacts →
	Indirect evidence “ORO Labs is an agentic procurement orchestration company on a mission to deliver effortless user experiences so businesses can shorten cycle times, decrease risk through…” Source: RevenueBase Database · checked Sep 6, 2026
9	Sterling Commerce An At&t Company	Indirect evidence	Dublin, OH, United StatesHQ checked Sep 6, 2026	1,001-5,000	213 contacts →
	Indirect evidence “DATELINE: August 27, 2010 - Sterling Commerce purchased from AT & T by IBM for $1.4B.” Source: RevenueBase Database · checked Sep 6, 2026
10	Cobblestone Software	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 6, 2026	51-200	193 contacts →
	Indirect evidence “CobbleStone Software is a best-of-breed, global provider of enterprise contract lifecycle management (CLM) and eProcurement software.” Source: RevenueBase Database · checked Sep 6, 2026
11	Clutch	Indirect evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	51-200	182 contacts →
	Indirect evidence “Clutch powers how businesses discover, evaluate, and hire the right B2B service partners.” Source: RevenueBase Database · checked Sep 6, 2026
12	order.co	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	51-200	179 contacts →
	Partial evidence “Order.co is an AI-powered procurement platform that connects purchasing, approvals, payments, and reporting in one intelligent system–so teams can place orders faster, cut manual…” Source: RevenueBase Database · checked Sep 6, 2026
13	Procurement Partners	Indirect evidence	Champaign, IL, United StatesHQ checked Sep 6, 2026	51-200	152 contacts →
	Indirect evidence “Discover Procurement Partner's supply chain technology – your trusted resource for streamlining operations.” Source: RevenueBase Database · checked Sep 6, 2026
14	Simfoni	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	147 contacts →
	Indirect evidence “Simfoni provides Spend Analytics, eSourcing, and Tail Spend Management solutions to leading global enterprises.” Source: RevenueBase Database · checked Sep 6, 2026
15	Openforce	Partial evidence	Scottsdale, AZ, United StatesHQ checked Sep 6, 2026	51-200	146 contacts →
	Partial evidence “Openforce is the leading compliance, workforce management, and payments platform for contracting companies and independent contractors (IC vendors).” Source: RevenueBase Database · checked Sep 6, 2026
16	Spendflo	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	146 contacts →
	Partial evidence “Spendflo is an AI-native procurement platform built to simplify how modern companies buy.” Source: RevenueBase Database · checked Sep 6, 2026
17	Nuorder By Lightspeed	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	51-200	138 contacts →
	Partial evidence “NuORDER by Lightspeed is a leading B2B platform powering commerce and discovery for the world's best brands and retailers.” Source: RevenueBase Database · checked Sep 6, 2026
18	Tradecentric	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 6, 2026	51-200	131 contacts →
	Indirect evidence “TradeCentric helps enterprise suppliers integrate commerce and accelerate results by making it easier to do business with their buyers.” Source: RevenueBase Database · checked Sep 6, 2026
19	Sourcenow	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 6, 2026	51-200	131 contacts →
	Indirect evidence “Empowering Workforce Management with AI-Driven Innovation At SourceNow, we are redefining the way organizations manage their external workforce.” Source: RevenueBase Database · checked Sep 6, 2026
20	Spendhq	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 6, 2026	51-200	127 contacts →
	Indirect evidence “SpendHQ empowers procurement leaders at complex organizations to make important decisions with confidence by providing a single source of truth for spend data, project tracking…” Source: RevenueBase Database · checked Sep 6, 2026
21	Orocommerce	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	51-200	114 contacts →
	Indirect evidence “OroCommerce, created by Oro Inc, is the gold standard in B2B eCommerce.” Source: RevenueBase Database · checked Sep 6, 2026
22	KOJO	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	109 contacts →
	Partial evidence “Kojo is the leading materials procurement platform for trade and self-perform general contractors.” Source: RevenueBase Database · checked Sep 6, 2026
23	Science Exchange	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	106 contacts →
	Partial evidence “Science Exchange is the first purchasing and supplier orchestration platform for life sciences companies.” Source: RevenueBase Database · checked Sep 6, 2026
24	B2gnow	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 6, 2026	51-200	103 contacts →
	Indirect evidence “B2Gnow is a national leader in software solutions that promote transparency, accountability, and compliance in public and private contracting.” Source: RevenueBase Database · checked Sep 6, 2026
25	Dentira	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	85 contacts →
	Partial evidence “Vertically integrated procurement platform for Healthcare with Top VC as lead investor, growing 100% QoQ and already revenue positive.” Source: RevenueBase Database · checked Sep 6, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: vendor engagement platforms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names vendor engagement platforms.
Partial evidence: Its own public description names part of vendor engagement platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name vendor engagement platforms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 648 vendor engagement platforms based in the United States

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Vendor engagement platforms based in the United States at a glance

As of Sep 6, 2026

43.3%Verified-email coverage

29.8%Mobile-number coverage

21.8Average contacts per company

11-50Median size (employees)

6.9%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

317

11-50

232

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

5,7410–30

33331–60

461–90

290–180

43180+

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 vendor engagement 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “vendor engagement 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 vendor engagement 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 vendor engagement platforms, 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 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, 6,123 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 6, 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.

Vendor engagement platforms by metro

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 vendor engagement 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 vendor engagement platforms are there based in the United States?

RevenueBase identified 648 vendor engagement platforms 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?

Icertis, headquartered in Bellevue, tops this list with the largest team on record.

Which city has the most vendor engagement platforms?

New York leads with 45 headquartered companies, followed by San Francisco (43) and Atlanta (22).

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 6,123 verified decision-maker contacts tracked across these 648 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 6, 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 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.