Company lists · Data refreshed September 2026

Top 9 Nonprofit software development companies based in London, United Kingdom

RevenueBase identified 29 company matches for nonprofit software development companies associated with London, United Kingdom as of September 2026 and tracks 256 professional contacts across them, including 163 with verified work emails and 20 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for nonprofit software development companies associated with London, United Kingdom, 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 13, 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 13, 2026 How this list was built
29Companies
256Contacts tracked
163Verified emails
20Mobile numbers
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The 9 largest nonprofit software development companies based in London, United Kingdom

Ranked by team size
Top 9 of 29 company matches for nonprofit software development companies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 13, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 13, 202651-20068 contacts →

Exact match

“At smartimpact, we thrive on making great technology work for amazing organisations.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 13, 202651-20061 contacts →

Exact match

“We are a multi-award winning team of 70 experts providing Salesforce.com cloud consultancy software services and apps (Clarity Data Transform, Clarity Gift Aid, Clarity Banking)…”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-5035 contacts →

Exact match

“Hyphen8 is a Salesforce consultancy whose focus, and passion, is to work in partnership with non-profit organisations to transform the way they work.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-5024 contacts →

Exact match

“GeniusTags is a software solutions company that was founded by entrepreneurs with long experience in the IT and humanitarian sectors.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-5011 contacts →

Exact match

“Driven by our mission to facilitate the missions of others to do more good, we've been building specialised software since 1990, with a focus on the Not-For-Profit sector.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-508 contacts →

Exact match

“Gallery Partnership provides an entire suite of affordable IT services and software systems, empowering charities to focus on what’s most important - their cause.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-104 contacts →

Exact match

“Prismaya CRM is a comprehensive customer relationship management platform designed specifically for charities, nonprofits, and non-governmental organizations (NGOs).”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-503 contacts →

Exact match

“Assemble assists organisations in bringing people and process together with one powerful solution.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-103 contacts →

Exact match

“Control your business from anywhere.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase

Showing 9 of 29 nonprofit software development companies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 163 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nonprofit software development companies based in London, United Kingdom at a glance

As of Sep 13, 2026
63.7%Verified-email coverage
7.8%Mobile-number coverage
8.8Average contacts per company
1-10Median size (employees)
Sep 13, 2026Page data refreshed

Companies by employee count

1-10
20
11-50
6
51-200
3

Freshness & accuracy

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

Email last verified

Median 16.0d

Company record updated

Median 65.0d

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 London, United Kingdom whose business descriptions match “nonprofit software development companies” 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 163 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 13, 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.

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 software development companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many nonprofit software development companies are there based in London, United Kingdom?

RevenueBase identified 29 company matches for nonprofit software development companies associated with London, United Kingdom 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?

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

Which city in the United Kingdom has the most nonprofit software development companies?

London leads the United Kingdom with 29 company records, followed by Manchester (6) and Birmingham (2).

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 163 professional contacts with verified work emails tracked across these 29 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 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 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.