Company lists · Data refreshed September 2026
Top 25 Nonprofit software developers based in the United Kingdom
RevenueBase identified 58 nonprofit software developers headquartered in the United Kingdom as of September 2026 and tracks 531 professional contacts across them, including 231 with verified work emails and 43 with mobile numbers. London is the largest hub.
This list covers nonprofit software developers headquartered in the United Kingdom, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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.
The 25 largest nonprofit software developers based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 68 | ||||
“At smartimpact, we thrive on making great technology work for amazing organisations.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 61 | ||||
“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)…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | Hyphen8Indirect evidence | 35 | |||
“Hyphen8 is a Salesforce consultancy whose focus, and passion, is to work in partnership with non-profit organisations to transform the way they work.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | GeniustagsPartial evidence | 24 | |||
“GeniusTags is a software solutions company that was founded by entrepreneurs with long experience in the IT and humanitarian sectors.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 22 | ||||
“Social Sync helps charities raise more through better supporter journeys.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 20 | ||||
“Dedicated to creating technology to make the world a better place.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 18 | ||||
“We are a technology company focused on cloud-based solutions helping the not-for-profit sector achieve more to make the world a better place.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 11 | ||||
“Is your business software letting you down?” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | Westwood ForsterPartial evidence | 11 | |||
“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.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | VolunteeroIndirect evidence | 10 | |||
“Save time managing volunteers whilst improving your volunteer engagement and retention.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 8 | ||||
“Gallery Partnership provides an entire suite of affordable IT services and software systems, empowering charities to focus on what’s most important - their cause.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 | ||||
“Impact Box’s mission is to transform how the social sector uses technology.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 6 | ||||
“Carn Software was formed by the current Managing Director in October 1994, principally to service the software needs of the church and charity sector.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 5 | ||||
“The donorflex CRM offers charities a robust platform to streamline their fundraising efforts.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | Third Sector DesignIndirect evidence | 5 | |||
“Third Sector Design has a strong track record of helping non profits and political organisations maximise their impact through web technologies, having worked with over 50 clients…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 | ||||
“Redbourn was acquired by Fresche Solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | Smxi Software Systematic Marketing LTDPartial evidence | 4 | |||
“We build software designed around you!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 | ||||
“Prismaya CRM is a comprehensive customer relationship management platform designed specifically for charities, nonprofits, and non-governmental organizations (NGOs).” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 | ||||
“We help you make more impact on the world for yourself and for your customers.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 | ||||
“Assemble assists organisations in bringing people and process together with one powerful solution.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 | ||||
“Data Developments specialise in writing and developing software, specifically tailored for Faith organisations and Charities, for over 35 years.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 | ||||
“Porism develops software to oil the wheels of democracy and make it easier for public bodies to enrich communities and the places where people live.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 | ||||
“Control your business from anywhere.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 | ||||
“Darlston have been successfully delivering projects for charities and the UK government for over 12 years.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | Shared VisionIndirect evidence | 2 | |||
“Founded more than two decades ago as Rux Burton Associates, we have worked with over 200 schools, universities and colleges spanning five continents.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 58 nonprofit software developers based in the United Kingdom
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Nonprofit software developers based in the United Kingdom at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 developers, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “nonprofit software developers”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among nonprofit software developers, and records with no verified work email. Companies headquartered outside United Kingdom 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 an evidence 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, 231 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 5, 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.
Frequently asked
How many nonprofit software developers are there based in the United Kingdom?
RevenueBase identified 58 nonprofit software developers headquartered in the United Kingdom 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?
Smartimpact, headquartered in London, tops this list with the largest team on record.
Which city has the most nonprofit software developers?
London leads with 18 headquartered companies, followed by Birmingham (3) and Manchester (3).
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 231 verified decision-maker contacts tracked across these 58 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 5, 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.
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