Company lists · Data refreshed September 2026

Top 25 Nonprofit mentoring organizations based in Boston, United States

Name: Nonprofit mentoring organizations based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 63 companies tracked

RevenueBase identified 63 company matches for nonprofit mentoring organizations associated with Boston, United States as of September 2026 and tracks 1,548 professional contacts across them, including 388 with verified work emails. Across the United States, New York is the largest hub for this category (220 companies); Boston has 63.

This list covers company matches for nonprofit mentoring organizations associated with Boston, 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 September 20, 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 Sep 20, 2026 How this list was built

63Companies

1,548Contacts tracked

388Verified emails

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The 25 largest nonprofit mentoring organizations based in Boston, United States

Ranked by team size

Top 25 of 63 company matches for nonprofit mentoring organizations based in Boston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	JA Worldwide	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	327 contacts →
	Exact match “As one of the world’s largest and most impactful youth-serving NGOs, JA Worldwide delivers hands-on, immersive learning in entrepreneurship, work readiness, and financial health.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Artists For Humanity	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	184 contacts →
	Exact match “Artists For Humanity (AFH) harnesses the power of mentorship and paid professional experiences to inspire teens to build their future.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	BIG Brothers BIG Sisters Of Eastern Massachusetts	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	136 contacts →
	Exact match “For more than 60 years, Big Brothers Big Sisters of Eastern Massachusetts has worked to ensure that every child has the support from caring adults that they need for healthy…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Mentor	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	126 contacts →
	Exact match “MENTOR is the unifying champion for quality youth mentoring in the United States.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Tenacity	Exact match	Boston, United StatesHQ recorded Sep 20, 2026	11-50	106 contacts →
	Exact match “Tenacity is a city-wide Boston youth development organization focused on closing the achievement and opportunity gaps for underserved Boston youth.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Boston Scores	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	66 contacts →
	Exact match “Boston SCORES provides urban youth with team-based education programs that promote health & well-being, academic engagement, and civic leadership.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Center For Teen Empowerment, INC	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	62 contacts →
	Exact match “Teen Empowerment (TE) inspires inner-city youth to think deeply about the most difficult issues in their communities and provides them with the tools they need to work together to…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	St. Stephen's Youth Programs	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	49 contacts →
	Exact match “The mission of St.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Boston Partners In Education	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	41 contacts →
	Exact match “Our Mission Boston Partners in Education enhances the academic achievement and nurtures the personal growth of Boston's public school students by providing them with focused…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Silver Lining Mentoring	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	39 contacts →
	Exact match “Our mission is to empower youth in foster care to thrive through committed mentoring relationships and the development of essential life skills.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	The Valedictorian Project	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	n/a	36 contacts →
	Exact match “We believe in a more equitable future where every student has the network and guidance to achieve their goals.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Minds Matter Boston	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	35 contacts →
	Exact match “Minds Matter Boston connects driven and determined students from low-income families with the people, preparation, and possibilities to succeed in college, create their future…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Friends Of The Children-Boston	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	31 contacts →
	Exact match “Friends of the Children-Boston (Friends-Boston) creates generational change by engaging children from high-risk communities in twelve and a half years of transformative mentoring…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Imfahe	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	27 contacts →
	Exact match “IMFAHE is a non-profit, global mentoring program that connects European students, emigrated professionals and partners in the disciplines of Biomedicine, Engineering, and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Arkanum INC	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	24 contacts →
	Exact match “ARKanum brings teens with mentors as a family, fostering key character building skills that will help them on their way to lifelong success.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Mass Mentoring Partnership	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	22 contacts →
	Exact match “Mass Mentoring Partnership (MMP), is committed to ensuring that all young people in Massachusetts have the mentoring relationships they need to develop into thriving, engaged…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Inspire INC	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	201-500	22 contacts →
	Exact match “Founded in 1998, Inspire is a 501(c)(3) nonprofit offering management and strategy consulting services to leading nonprofit organizations across the United States.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Boston Higher Education Resource Center Herc	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	16 contacts →
	Exact match “The Boston Higher Education Resource Center (HERC) serves under-represented students in grades 9-12 and their families.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Alray Scholars Program	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	11 contacts →
	Exact match “Alray envisions a day when all Boston students will have access to the financial, academic, and emotional support they need to enroll in college, graduate, and be economically…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Mentorpro	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	9 contacts →
	Exact match “MentorPRO is a cutting-edge, evidence-based mentoring platform designed to help organizations launch, manage, and scale effective mentoring programs across education, workforce…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	ONE Bead	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	8 contacts →
	Exact match “At One Bead, we partner exclusively with elementary and middle schools in low-income communities where students identify predominantly as African American or Hispanic/Latino.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Morelli Associates	Exact match	Boston, NH, United StatesHQ recorded Sep 20, 2026	1-10	2 contacts →
	Exact match “Morelli Associates specializes in Non-Profit Business Consulting and Strategic Coaching for Staff and Board Leadership focused on Margin for Mission while eliminating…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Global Deeds Foundation, INC	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	2 contacts →
	Exact match “Global Deeds is devoted to disrupting the cycle of poverty by assisting schools, nonprofits, and corporations to empower disadvantaged youth through innovative educational and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Cultivated Accounting	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	2 contacts →
	Exact match “Partnering with nonprofit organizations and small businesses and their leaders to provide the financial expertise and guidance essential for their long-term success.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Discover Your Pace	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “Our mission is to foster greater equitable prosperity and well-being through all-inclusive coaching and educational programs.” Recorded in the RevenueBase company graph · Sep 20, 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 “nonprofit mentoring organizations”. 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 63 nonprofit mentoring organizations based in Boston, United States

See the full list, filter by size, metro and specialty, and access 388 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nonprofit mentoring organizations based in Boston, United States at a glance

As of Sep 20, 2026

25.1%Verified-email coverage

24.6Average contacts per company

1-10Median size (employees)

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 63 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 Boston, United States whose business descriptions match “nonprofit mentoring organizations” 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 388 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 September 20, 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.

Nonprofit mentoring organizations by metro in the United States

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 “nonprofit mentoring organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many nonprofit mentoring organizations are there based in Boston, United States?

RevenueBase identified 63 company matches for nonprofit mentoring organizations associated with Boston, United States as of September 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?

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

Which city in the United States has the most nonprofit mentoring organizations?

New York leads the United States with 220 company records, followed by Los Angeles (150) and Chicago (149). Boston has 63.

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 388 professional contacts with verified work emails tracked across these 63 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 September 20, 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.