Company lists · Data refreshed September 2026
Top 25 Constituent engagement software companies worldwide
RevenueBase identified 499 constituent engagement software companies worldwide as of September 2026 and tracks 13,602 professional contacts across them, including 5,014 with verified work emails. The United States is the largest market and Washington the largest hub.
This list covers constituent engagement software companies worldwide, 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. Country and city lists for constituent engagement software companies follow the table.
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.
The 25 largest constituent engagement software companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,100 contacts → | ||||
Partial evidence “Moore is a data-driven constituent experience management (CXM) company achieving accelerated growth for customers through integrated supporter experiences across all platforms…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,006 contacts → | ||||
Partial evidence “ACTIVE Network transforms the way communities come together, facilitating engagement and participation across a spectrum of activities and events.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 867 contacts → | ||||
Strong evidence “Community Brands is now Momentive Software, follow us at Momentive Software helps associations and nonprofits enhance membership management and donor engagement, automate and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 835 contacts → | ||||
Partial evidence “Momentive Software amplifies the impact of over mission-driven organizations in more than 30 countries, supporting over $11.7 billion raised and 287 million members served…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 638 contacts → | ||||
Indirect evidence “DISCLOSURE: We aren't Tata Consultancy Services, even though more than 200 'employees' mistakenly claim to work for us.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 514 contacts → | ||||
Indirect evidence “Bloomerang is the Giving Platform built for purpose, trusted by nonprofits to raise more funds, retain more supporters, and create lasting change.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 476 contacts → | ||||
Indirect evidence “Pushpay empowers mission-based organizations to engage their communities by bringing people together and fostering meaningful connections.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 461 contacts → | ||||
Indirect evidence “We help more than purpose-driven organizations grow and amplify their impact on the world by providing transformative technology and services that enable organizations to grow…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 357 contacts → | ||||
Partial evidence “Quorum is your AI-powered public affairs software to get information and execute strategy all in one place.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 336 contacts → | ||||
Indirect evidence “Fundraise Up is a technology company unlocking the world’s generosity potential by optimizing the way people give.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 302 contacts → | ||||
Indirect evidence “Our primary interest at FLS Connect is to understand your campaign’s mission and objective and work closely to design efforts that meet your needs.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 252 contacts → | ||||
Partial evidence “Clover creates software for real people.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 191 contacts → | ||||
Partial evidence “3Di creates powerful software solutions that empower governments and organizations to create stronger communities.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 188 contacts → | ||||
Indirect evidence “CyberGrants is now Bonterra, part of a cohesive tech lineup under the Bonterra brand.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 185 contacts → | ||||
Indirect evidence “Kindsight builds technology that helps fundraisers make a difference.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 173 contacts → | ||||
Indirect evidence “One Company, One Solution.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 157 contacts → | ||||
Partial evidence “Nelnet Community Engagement (NCE) exists to empower people to impact the world.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 137 contacts → | ||||
Partial evidence “For over 30 years, EventsAir has been developing innovative software solutions and services for the event management industry, creating one of the most comprehensive event…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 117 contacts → | ||||
Indirect evidence “Formerly EventBank, Glue Up is the leading provider of the cloud solutions that provide associations, event organizers, Chambers of Commerce, agencies, marketers, businesses, and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 113 contacts → | ||||
Indirect evidence “Almabase helps mission-driven organizations build stronger communities and inspire greater giving.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 111 contacts → | ||||
Strong evidence “The only stakeholder engagement software built for your long-term success.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 99 contacts → | ||||
Partial evidence “NationBuilder is the world’s most-used software for politics and advocacy.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 99 contacts → | ||||
Indirect evidence “My Inbox Media®: Global Innovation in Business Communication Established in 2010, My Inbox Media® (MiM) was built on a powerful premise: the ability to innovate traditional IT and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 97 contacts → | ||||
Indirect evidence “NGP VAN is the leading technology provider to progressive campaigns and organizations, offering an integrated platform that combines the best fundraising, compliance, field…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 95 contacts → | ||||
Indirect evidence “We identify ourselves as a communication technology company which drives ideas for our clients and transform businesses.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: constituent engagement software companies. 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 constituent engagement software companies.
- Partial evidence
- Its own public description names part of constituent engagement software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name constituent engagement software companies. 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 499 constituent engagement software companies worldwide
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Constituent engagement software companies worldwide at a glance
As of Sep 21, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 constituent engagement software 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.
- Coverage
- Every country. Country and city lists for constituent engagement software companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “constituent engagement software 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 constituent engagement software 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 constituent engagement software companies, and records with no verified work email.
- 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, 5,014 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.
Constituent engagement software companies by location
2 lists · largest firstEvery Constituent engagement software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 constituent engagement software 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 constituent engagement software companies are there worldwide?
RevenueBase identified 499 constituent engagement software companies worldwide 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?
MOORE, headquartered in Lanham, tops this list with the largest team on record.
Which country has the most constituent engagement software companies?
The United States leads with 237 companies, followed by the United Kingdom (27). Every constituent engagement software companies list by country and city is linked on this page.
Which city has the most constituent engagement software companies?
Washington leads with 20 headquartered companies, followed by London (12) and New York (11).
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 5,014 verified decision-maker contacts tracked across these 499 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.