Company lists · Data refreshed September 2026

Top 25 Charity website agencies based in the United States

Name: Charity website agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,234 companies tracked

RevenueBase identified 1,234 charity website agencies headquartered in the United States as of September 2026 and tracks 3,928 professional contacts across them, including 909 with verified work emails. New York is the largest hub.

This list covers charity website agencies 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 21, 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 21, 2026 86% judged on-target in blind review

1,234Companies

3,928Contacts tracked

909Verified emails

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The 25 largest charity website agencies based in the United States

Ranked by team size

Top 25 of 1,234 charity website agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to charity website agencies: 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	Clover	Indirect evidence	Newbury Park, CA, United StatesHQ checked Sep 21, 2026	n/a	252 contacts →
	Indirect evidence “Clover creates software for real people.” Source: RevenueBase Database · checked Sep 21, 2026
2	Paypal Giving Fund	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	89 contacts →
	Partial evidence “PayPal Giving Fund enables some of the world’s leading online platforms to create opportunities for everyday charitable giving.” Source: RevenueBase Database · checked Sep 21, 2026
3	Frontstream	Partial evidence	Claymont, DE, United StatesHQ checked Sep 21, 2026	51-200	78 contacts →
	Partial evidence “Over organizations have trusted FrontStream to simplify their charity auctions, galas, peer-to-peer events, online fundraisers, and employee giving.” Source: RevenueBase Database · checked Sep 21, 2026
4	Wedowebapps	Partial evidence	Hallandale Beach, FL, United StatesHQ checked Sep 21, 2026	51-200	52 contacts →
	Partial evidence “WEDOWEBAPPS is enthusiastic about website development and design, and we always try to create a tailored solution for your professional need.” Source: RevenueBase Database · checked Sep 21, 2026
5	Engage	Partial evidence	Miami, FL, United StatesHQ checked Sep 21, 2026	51-200	51 contacts →
	Partial evidence “At Engage, we provide comprehensive website design and management services tailored specifically for small businesses.” Source: RevenueBase Database · checked Sep 21, 2026
6	Urban Insight	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	32 contacts →
	Partial evidence “At Urban Insight, we partner with mission-focused organizations to design and build websites that elevate engagement, scale with growth, and drive measurable impact.” Source: RevenueBase Database · checked Sep 21, 2026
7	Kalamuna	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 21, 2026	11-50	31 contacts →
	Indirect evidence “Kalamuna makes the Internet for rabble-rousing organizations driven to tinker, critique, and change things for the better.” Source: RevenueBase Database · checked Sep 21, 2026
8	Digital Polygon	Indirect evidence	Bethesda, MD, United StatesHQ checked Sep 21, 2026	11-50	29 contacts →
	Indirect evidence “Our mission is to #BuildItBetter.” Source: RevenueBase Database · checked Sep 21, 2026
9	Cornershop Creative	Indirect evidence	Olney, MD, United StatesHQ checked Sep 21, 2026	11-50	28 contacts →
	Indirect evidence “Creativity with a conscience.” Source: RevenueBase Database · checked Sep 21, 2026
10	Spectrum NET Designs, INC	Partial evidence	Grandville, MI, United StatesHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “Today, a presence on the Internet is an integral part of the business world, and having a website is as expected as having a business card.” Source: RevenueBase Database · checked Sep 21, 2026
11	Revv Fundraising Platform	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	25 contacts →
	Indirect evidence “Revv is a donation and fundraising platform that was founded in 2014 by online fundraisers who couldn’t find another solution that suited their needs for raising money online.” Source: RevenueBase Database · checked Sep 21, 2026
12	Gofundraise	Partial evidence	New Rochelle, NY, United StatesHQ checked Sep 21, 2026	11-50	23 contacts →
	Partial evidence “GoFundraise empowers and rally’s together individuals, organisations and groups to make a difference for charities and worthy causes around the world.” Source: RevenueBase Database · checked Sep 21, 2026
13	rallyup.com	Partial evidence	Tucson, AZ, United StatesHQ checked Sep 21, 2026	51-200	23 contacts →
	Partial evidence “RallyUp provides charities, schools and other organizations with an online platform to run next-generation fundraising experiences that help them further their causes in…” Source: RevenueBase Database · checked Sep 21, 2026
14	Aten Design Group	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	22 contacts →
	Indirect evidence “Aten Design Group provides digital strategy, design, and development for mission-driven organizations making an impact around the world.” Source: RevenueBase Database · checked Sep 21, 2026
15	Duvys Media	Indirect evidence	Lakewood, NJ, United StatesHQ checked Sep 21, 2026	11-50	22 contacts →
	Indirect evidence “Founded in 1996 Duvys Media has been an industry leader in advanced Web Design and Development.” Source: RevenueBase Database · checked Sep 21, 2026
16	DNL Omnimedia	Indirect evidence	Arlington, United StatesHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “DNL OmniMedia is a full-service digital agency with over 15 years of experience in leveraging technology for positive change.” Source: RevenueBase Database · checked Sep 21, 2026
17	Insercorp	Partial evidence	Hampton Roads, VA, United StatesHQ checked Sep 21, 2026	1-10	18 contacts →
	Partial evidence “Insercorp provides quality website design and application development services to small business, organizations, corporations, and government.” Source: RevenueBase Database · checked Sep 21, 2026
18	Pledge	Indirect evidence	Venice, CA, United StatesHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “Pledge -#1 Free Fundraising and Donation Platform Raise more online donations with Pledge’s free fundraising platform for nonprofits, companies & individuals.” Source: RevenueBase Database · checked Sep 21, 2026
19	Giant Rabbit	Partial evidence	Oakland, CA, United StatesHQ checked Sep 21, 2026	11-50	16 contacts →
	Partial evidence “Giant Rabbit partners with nonprofits to solve data problems, refresh websites, and reimagine a technology infrastructure that works for staff, rather than against them.” Source: RevenueBase Database · checked Sep 21, 2026
20	123 Websites	Partial evidence	Laguna Beach, CA, United StatesHQ checked Sep 21, 2026	11-50	16 contacts →
	Partial evidence “WE ARE 123 WEBSITES!” Source: RevenueBase Database · checked Sep 21, 2026
21	Side SEA Hopsie INC	Indirect evidence	Portland, ME, United StatesHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “We built a fundraising platform, Hopsie, because we noticed a glaring barrier to entry for nonprofits in the digital world.” Source: RevenueBase Database · checked Sep 21, 2026
22	Change	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	1-10	14 contacts →
	Indirect evidence “Change is the leading donation processing platform that enables companies to run fundraising and cause marketing campaigns with ease.” Source: RevenueBase Database · checked Sep 21, 2026
23	Webserves	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “For over 20 years, WebServes has provided affordable and customized web design & development, and integrated digital marketing for nonprofits.” Source: RevenueBase Database · checked Sep 21, 2026
24	Rooah, LLC	Indirect evidence	Dover, DE, United StatesHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “Rooah!” Source: RevenueBase Database · checked Sep 21, 2026
25	RAD Campaign	Indirect evidence	Washington, United StatesHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “Rad Campaign is a full-service web agency that provides web design, development, online marketing and strategic services to non-profit organizations, political campaigns, and…” Source: RevenueBase Database · checked Sep 21, 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: charity website agencies. 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 charity website agencies.
Partial evidence: Its own public description names part of charity website agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name charity website agencies. 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 1,234 charity website agencies based in the United States

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Charity website agencies based in the United States at a glance

As of Sep 21, 2026

23.1%Verified-email coverage

3.2Average contacts per company

1-10Median size (employees)

2.8%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

1,102

11-50

112

51-200

201-500

501-1,000

5,001-10,000

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 1,234 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 charity website agencies, 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 “charity website agencies”. 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 charity website agencies), 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 charity website agencies, 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, 909 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 21, 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.

Charity website agencies by metro

Charity website agencies in New York34

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 charity website agencies, 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 charity website agencies are there based in the United States?

RevenueBase identified 1,234 charity website agencies 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?

Clover, headquartered in Newbury Park, tops this list with the largest team on record.

Which city has the most charity website agencies?

New York leads with 34 headquartered companies, followed by Chicago (17) and Seattle (16).

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 909 verified decision-maker contacts tracked across these 1,234 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 21, 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.