Company lists · Data refreshed September 2026

Top 11 Nonprofit software development companies based in New York, United States

RevenueBase identified 28 nonprofit software development companies headquartered in New York, United States as of September 2026 and tracks 538 professional contacts across them, including 292 with verified work emails and 165 with mobile numbers. New York is the largest hub.

This list covers nonprofit software development companies headquartered in New York, 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 13, 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 13, 2026 86% judged on-target in blind review
28Companies
538Contacts tracked
292Verified emails
165Mobile numbers
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The 11 largest nonprofit software development companies based in New York, United States

Ranked by team size
Top 11 of 28 nonprofit software development companies based in New York, United States, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to nonprofit software development companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceNew York, NY, United StatesHQ checked Sep 13, 202611-5039 contacts →

Partial evidence

“Casebook PBC is the innovator of human services software that improves outcomes for organizations and the people they serve.”

Source: RevenueBase Database · checked Sep 13, 2026
2Indirect evidenceNew York, United StatesHQ checked Sep 13, 202611-5039 contacts →

Indirect evidence

“Hundreds of billions of dollars are donated through foundations every year in the United States.”

Source: RevenueBase Database · checked Sep 13, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 13, 202611-5023 contacts →

Indirect evidence

“Our company helps non-profits reimagine how they do business through digital engagement.”

Source: RevenueBase Database · checked Sep 13, 2026
4Strong evidenceNew York, NY, United StatesHQ checked Sep 13, 202651-20017 contacts →

Strong evidence

“The #1 All-In-One Nonprofit Software - Giveffect is the leading fundraising, events, online donations, offline gift tracking, volunteer management, donor management and…”

Source: RevenueBase Database · checked Sep 13, 2026
5Strong evidenceNew York, NY, United StatesHQ checked Sep 13, 202651-20016 contacts →

Strong evidence

“Springly, a brand of AssoConnect, is an all-in-one nonprofit management software.”

Source: RevenueBase Database · checked Sep 13, 2026
6Strong evidenceNew York, NY, United StatesHQ checked Sep 13, 202611-5014 contacts →

Strong 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 13, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 13, 202611-5011 contacts →

Partial evidence

“Limus Design is a New York-based design and web development agency that specializes in creating high-quality, fully customized digital tools that enable non-profit organizations…”

Source: RevenueBase Database · checked Sep 13, 2026
8Strong evidenceNew York, United StatesHQ checked Sep 13, 20261-105 contacts →

Strong evidence

“Pledge Software's vision is to make it easier for nonprofits and communities to get the scarce resources they need.”

Source: RevenueBase Database · checked Sep 13, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 13, 20261-101 contacts →

Indirect evidence

“Empowering mission-driven organizations with strategic consulting, smart automation, and constituent-centric fundraising tools.”

Source: RevenueBase Database · checked Sep 13, 2026
10Partial evidenceNew York, NY, United StatesHQ checked Sep 13, 20261-101 contacts →

Partial evidence

“Solve IT Simply is passionate about making nonprofit technology easy.”

Source: RevenueBase Database · checked Sep 13, 2026
11Indirect evidenceNew York, NY, United StatesHQ checked Sep 13, 20261-101 contacts →

Indirect evidence

“Sarapis envisions a world in which people can access and own the technology they need to create just, abundant and sustainable societies.”

Source: RevenueBase Database · checked Sep 13, 2026

Showing 11 of 28 nonprofit software development companies based in New York, United States

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Nonprofit software development companies based in New York, United States at a glance

As of Sep 13, 2026
54.3%Verified-email coverage
30.7%Mobile-number coverage
19.2Average contacts per company
1-10Median size (employees)
100.0%Largest-city concentration · New York
Sep 13, 2026Page data refreshed

Companies by employee count

1-10
14
11-50
9
51-200
4
201-500
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 16.0d

Company record updated

Median 52.0d

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 nonprofit software development companies, 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 New York, United States whose own description of what they do matches “nonprofit software development companies”. 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 nonprofit software development companies), 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 nonprofit software development companies, and records with no verified work email. Companies headquartered outside New York 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, 292 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 13, 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.

Nonprofit software development companies by metro in the United States

  • Nonprofit software development companies in New York28

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 nonprofit software development companies, 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 nonprofit software development companies are there based in New York, United States?

RevenueBase identified 28 nonprofit software development companies headquartered in New York, 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?

Casebook PBC, headquartered in New York, tops this list with the largest team on record.

Which city has the most nonprofit software development companies?

New York leads with 28 headquartered companies, followed by San Francisco (18) and Austin (15).

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 292 verified decision-maker contacts tracked across these 28 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 13, 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.