Company lists · Data refreshed November 2026

Top 25 B2B sales development agencies based in the United States

Name: B2B sales development agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 6,203 companies tracked

RevenueBase identified 6,203 company matches for B2B sales development agencies associated with the United States as of November 2026 and tracks 74,271 professional contacts across them, including 14,460 with verified work emails. New York is the largest hub.

This list covers company matches for B2B sales development agencies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 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 RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built

6,203Companies

74,271Contacts tracked

14,460Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest B2B sales development agencies based in the United States

Ranked by team size

Top 25 of 6,203 company matches for B2B sales development agencies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Marketsource INC	Exact match	Alpharetta, GA, United StatesHQ recorded Nov 5, 2026	5,001-10,000	3,613 contacts →
	Exact match “MarketSource, an Allegis Group company, is a sales acceleration company focused on delivering better outcomes for many of the world’s most iconic brands.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Cience	Exact match	Miami, FL, United StatesHQ recorded Nov 5, 2026	201-500	1,120 contacts →
	Exact match “CIENCE Technologies, Inc, founded in 2015 and headquartered in Denver, CO, is a pioneering global company in lead generation software and services, committed to transforming the…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Ziff Davis Performance Marketing	Exact match	Austin, TX, United StatesHQ recorded Nov 5, 2026	1,001-5,000	884 contacts →
	Exact match “ZDPM is the coming together of Salesify and DemandShore.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Anteriad	Exact match	New York, NY, United StatesHQ recorded Nov 5, 2026	501-1,000	757 contacts →
	Exact match “Data Driven.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Memoryblue	Exact match	Tysons, VA, United StatesHQ recorded Nov 5, 2026	501-1,000	741 contacts →
	Exact match “memoryBlue is the go-to partner for revenue leaders in B2B Tech looking to grow their pipeline engine.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Flexisales INC	Exact match	Las Vegas, NV, United StatesHQ recorded Nov 5, 2026	201-500	736 contacts →
	Exact match “Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Abstrakt Marketing Group	Exact match	St. Louis, MO, United StatesHQ recorded Nov 5, 2026	501-1,000	732 contacts →
	Exact match “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Salebuild	Exact match	Redwood City, CA, United StatesHQ recorded Nov 5, 2026	n/a	725 contacts →
	Exact match “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	CMD	Exact match	Portland, OR, United StatesHQ recorded Nov 5, 2026	n/a	631 contacts →
	Exact match “Take command of every opportunity with a partner that gets results.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Infinity	Exact match	Cedar Rapids, IA, United StatesHQ recorded Nov 5, 2026	501-1,000	601 contacts →
	Exact match “Infinity is an award-winning inside sales agency and consulting firm with 30 years of experience helping B2B companies maximize sales and drive revenue.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	The Pipeline Group	Exact match	San Jose, CA, United StatesHQ recorded Nov 5, 2026	201-500	530 contacts →
	Exact match “The Pipeline Group helps B2B tech companies scale pipeline fast through our SDR-as-a-Service model.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Callbox INC	Exact match	Encino, CA, United StatesHQ recorded Nov 5, 2026	201-500	528 contacts →
	Exact match “Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Iresearch Services	Exact match	New York, United StatesHQ recorded Nov 5, 2026	201-500	511 contacts →
	Exact match “We get it.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Smart Circle International	Exact match	Newport Beach, CA, United StatesHQ recorded Nov 5, 2026	51-200	493 contacts →
	Exact match “At Smart Circle, our goal is to provide our clients with access to customized face-to- face marketing and sales solutions by connecting our clients with a dynamic network of…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Saleshive	Exact match	Denver, CO, United StatesHQ recorded Nov 5, 2026	51-200	448 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Amarketforce	Exact match	San Jose, CA, United StatesHQ recorded Nov 5, 2026	201-500	407 contacts →
	Exact match “aMarketForce is a full-scale B2B Contact Database & Demand Generation services company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	EBQ	Exact match	Austin, TX, United StatesHQ recorded Nov 5, 2026	201-500	386 contacts →
	Exact match “EBQ is an outsourced sales and marketing organization that provides services to help companies scale.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Cydcor	Exact match	Agoura Hills, CA, United StatesHQ recorded Nov 5, 2026	51-200	367 contacts →
	Exact match “We create opportunity: For our clients, our team, and the future.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Marketbridge	Exact match	Bethesda, MD, United StatesHQ recorded Nov 5, 2026	201-500	360 contacts →
	Exact match “Marketbridge partners with B2B leaders to create unified Go-to-Market® systems by connecting strategy, AI, creativity, activation and measurement.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	FUNNL	Exact match	Philadelphia, United StatesHQ recorded Nov 5, 2026	201-500	344 contacts →
	Exact match “FunnL was built on a revolutionary idea: B2B companies don’t need more leads-they need more qualified sales meetings with decision-makers.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Madison Logic	Exact match	New York, NY, United StatesHQ recorded Nov 5, 2026	201-500	337 contacts →
	Exact match “Since 2005, Madison Logic has empowered the largest and fastest-growing companies to convert their best accounts faster.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	By Appointment Only, Inc. BAO	Exact match	Chelmsford, MA, United StatesHQ recorded Nov 5, 2026	201-500	297 contacts →
	Exact match “The market knows us as the leader in appointment setting.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Marketing Works	Exact match	Worthington, OH, United StatesHQ recorded Nov 5, 2026	n/a	296 contacts →
	Exact match “An integrated B2B agency of strategists and execution specialists, Marketing Works is outcomes driven, strategy focused and values-based.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Jumpcrew	Exact match	Nashville, United StatesHQ recorded Nov 5, 2026	201-500	287 contacts →
	Exact match “Launch-ready sales teams, experienced leaders, and time-tested processes to help you acquire new customers faster and with less risk than doing it alone.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	1105 Media	Exact match	Woodland Hills, CA, United StatesHQ recorded Nov 5, 2026	51-200	286 contacts →
	Exact match “1105 Media, Inc, is a leading business-to-business (B2B) services provider whose sole mission is to help our customers grow their business.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “B2B sales development agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 6,203 B2B sales development agencies based in the United States

See the full list, filter by size, metro and specialty, and access 14,460 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

B2B sales development agencies based in the United States at a glance

As of Nov 5, 2026

19.5%Verified-email coverage

12.0Average contacts per company

1-10Median size (employees)

6.2%Largest-city concentration · New York

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

3,839

11-50

1,797

51-200

413

201-500

113

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 6,203 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United States whose business descriptions match “B2B sales development agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 14,460 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

B2B sales development agencies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “B2B sales development agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many B2B sales development agencies are there based in the United States?

RevenueBase identified 6,203 company matches for B2B sales development agencies associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Marketsource INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most B2B sales development agencies?

New York leads with 387 company records, followed by San Francisco (186) and Austin (164).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 14,460 professional contacts with verified work emails tracked across these 6,203 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 6,203 B2B sales development agencies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

B2B sales development agencies by geography

Browse the directory

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.