Company lists · Data refreshed September 2026

Top 25 International nonprofit consultants based in Boston, United States

Name: International nonprofit consultants based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 55 companies tracked

RevenueBase identified 55 international nonprofit consultants headquartered in Boston, United States as of September 2026 and tracks 1,398 professional contacts across them, including 550 with verified work emails. Across the United States, New York is the largest hub for this category (192 companies); Boston has 55.

This list covers international nonprofit consultants headquartered in Boston, 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 28, 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 28, 2026 86% judged on-target in blind review

55Companies

1,398Contacts tracked

550Verified emails

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The 25 largest international nonprofit consultants based in Boston, United States

Ranked by team size

Top 25 of 55 international nonprofit consultants based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to international nonprofit consultants: 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	FSG	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	51-200	517 contacts →
	Partial evidence “At FSG, we are a global nonprofit consulting firm committed to advancing equitable systems change.” Source: RevenueBase Database · checked Sep 28, 2026
2	The Bridgespan Group	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	201-500	443 contacts →
	Partial evidence “The Bridgespan Group is a global nonprofit that strives to make the world more equitable and just.” Source: RevenueBase Database · checked Sep 28, 2026
3	Empower Success Corps	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	51-200	74 contacts →
	Partial evidence “At ESC, our mission is to empower nonprofits to achieve their goals & contribute to a more just and equitable world.” Source: RevenueBase Database · checked Sep 28, 2026
4	Soar Management Consulting Group	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	n/a	37 contacts →
	Partial evidence “SOAR strengthens nonprofits through collaborative, pro bono consulting that builds organizational capacity and deepens community impact while fostering an enriching learning…” Source: RevenueBase Database · checked Sep 28, 2026
5	GRC Northeastern Branch	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	11-50	32 contacts →
	Indirect evidence “GRC is a global student-run strategic consulting and research think tank with over 20 highly selective chapters across leading universities including Wharton, Columbia, Harvard…” Source: RevenueBase Database · checked Sep 28, 2026
6	The More Than Giving CO	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	n/a	31 contacts →
	Partial evidence “We give nonprofits with visionary leaders and compelling missions an affordable, on-demand staffing solution to supplement the bandwidth and skillsets of their volunteer force.” Source: RevenueBase Database · checked Sep 28, 2026
7	TDC Nonprofit Management Consulting	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	11-50	27 contacts →
	Partial evidence “TDC is a nonprofit management consulting and research firm that works across the nonprofit sector.” Source: RevenueBase Database · checked Sep 28, 2026
8	Brightvine Solutions	Strong evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	11-50	26 contacts →
	Strong evidence “BrightVine is a full service, boutique consultancy providing nonprofit technology consulting and advisory services.” Source: RevenueBase Database · checked Sep 28, 2026
9	Development Guild DDI	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “We partner with nonprofit leaders to drive their missions forward with fresh perspectives and high-impact solutions through our 45+ years of experience in strategy, fundraising…” Source: RevenueBase Database · checked Sep 28, 2026
10	Inspire INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	201-500	22 contacts →
	Partial evidence “Founded in 1998, Inspire is a 501(c)(3) nonprofit offering management and strategy consulting services to leading nonprofit organizations across the United States.” Source: RevenueBase Database · checked Sep 28, 2026
11	Page Consulting LLC	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	8 contacts →
	Partial evidence “We partner with small and medium-sized nonprofits to build their capacity for fundraising success by strengthening their fundraising infrastructure, helping cultivate their unique…” Source: RevenueBase Database · checked Sep 28, 2026
12	Data Soul Research	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Data+Soul Research is a consulting firm that specializes in design, strategy, and evaluation for social impact.” Source: RevenueBase Database · checked Sep 28, 2026
13	The Numad Group	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “The Numad Group is communication, fundraising, strategic planning, and program evaluation consulting firm that primarily partners with nonprofits in the arts, education, and…” Source: RevenueBase Database · checked Sep 28, 2026
14	The Venti Group, LLC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Through a unique 100% focus on philanthropic operation services, The Venti Group will innovate and optimize your fundraising operations.” Source: RevenueBase Database · checked Sep 28, 2026
15	Back Of The Napkin Consulting LLC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Back of the Napkin provides evaluation, program design, and strategic planning services through collaborative processes that are fun and people enjoy so the solutions stick.” Source: RevenueBase Database · checked Sep 28, 2026
16	Sarah J Consulting	Indirect evidence	Boston, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Development leaders: Whether you're tasked with raising $1M or $100M, the stakes are super high.” Source: RevenueBase Database · checked Sep 28, 2026
17	Copley Raff INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Copley Raff is a U.S.” Source: RevenueBase Database · checked Sep 28, 2026
18	The Allen Company LLC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “To companies needing business development, political organizations needing an assist with communications, fundraising, or strategy, schools looking to reach the next level, or any…” Source: RevenueBase Database · checked Sep 28, 2026
19	Development Strategy Consultants	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “Development Strategy strengthens organizations to maximize the full potential of their mission.” Source: RevenueBase Database · checked Sep 28, 2026
20	Sage Advancement Group	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Sage Advancement Group is a fundraising, strategy and market research consulting firm serving nonprofits throughout New England.” Source: RevenueBase Database · checked Sep 28, 2026
21	Sisu Vantage	Indirect evidence	Boston, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “SISU Vantage is a team of globally based professionals who are passionate about individuals and organizations unleashing their potential for sustainable growth and social impact.” Source: RevenueBase Database · checked Sep 28, 2026
22	Morelli Associates	Indirect evidence	Boston, NH, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Morelli Associates specializes in Non-Profit Business Consulting and Strategic Coaching for Staff and Board Leadership focused on Margin for Mission while eliminating…” Source: RevenueBase Database · checked Sep 28, 2026
23	Agile Fundraising And Strategy Consulting	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “Agility + Strategy+ Funding= Mission Impact Does your organization need to secure more funds for mission-critical work?” Source: RevenueBase Database · checked Sep 28, 2026
24	RC Consulting Boston	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “RC Consulting helps small nonprofits increase revenue through resource-responsive, mission-driven fundraising strategies so that they can do more for the communities they serve.” Source: RevenueBase Database · checked Sep 28, 2026
25	Potenciar Advisors, LLC	Indirect evidence	Boston, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 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: international nonprofit consultants. 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 international nonprofit consultants.
Partial evidence: Its own public description names part of international nonprofit consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international nonprofit consultants. 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 55 international nonprofit consultants based in Boston, United States

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International nonprofit consultants based in Boston, United States at a glance

As of Sep 28, 2026

39.3%Verified-email coverage

25.4Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 55 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 international nonprofit consultants, 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 Boston, United States whose own description of what they do matches “international nonprofit consultants”. 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 international nonprofit consultants), 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 international nonprofit consultants, and records with no verified work email. Companies headquartered outside Boston 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, 550 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.

International nonprofit consultants by metro in the United States

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 international nonprofit consultants, 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 international nonprofit consultants are there based in Boston, United States?

RevenueBase identified 55 international nonprofit consultants headquartered in Boston, 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?

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

Which city in the United States has the most international nonprofit consultants?

New York leads the United States with 192 headquartered companies, followed by Washington (181) and Chicago (133). Boston has 55.

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 550 verified decision-maker contacts tracked across these 55 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.

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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.