Company lists · Data refreshed November 2026
Top 21 Open source cloud infrastructure companies based in the United Kingdom
RevenueBase identified 57 company matches for open source cloud infrastructure companies associated with the United Kingdom as of November 2026 and tracks 341 professional contacts across them, including 141 with verified work emails. London is the largest hub.
This list covers company matches for open source cloud infrastructure companies associated with the 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 November 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 21 largest open source cloud infrastructure companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 68 contacts → | ||||
Exact match “Civo is the Sovereign Cloud and AI platform that frees you to build without limits.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 30 contacts → | ||||
Exact match “ShapeBlue is the largest independent integrator of CloudStack technologies globally.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 29 contacts → | ||||
Exact match “StackHPC is one of the leading OpenStack consultancies working with research institutions worldwide.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 21 contacts → | ||||
Exact match “Arjuna Technologies Limited is a world leading innovator in distributed computing and has an international reputation for delivering mission-critical products to global software…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 19 contacts → | ||||
Exact match “Flax & Teal Limited is focused on open technology and its ability to transform business and society, through efficiency and interlinking.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 14 contacts → | ||||
Exact match “Keep IT Simple (KITS), a TPXimpact company, delivers secure, inclusive and outcome-focused digital transformation services for Government and public sector organisations.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 13 contacts → | ||||
Exact match “Private Cloud Infrastructure.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 13 contacts → | ||||
Exact match “Open, Affordable, Predictable.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 5 contacts → | ||||
Exact match “At Scaleblade we are developing a suite of cloud compute tools to help keep you (and your business) online.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 5 contacts → | ||||
Exact match “Devito Codes Ltd is the commercial arm of the open-source platform Devito.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 3 contacts → | ||||
Exact match “Flexiscale offers innovative cloud solutions to increase revenues and profits by arming our customers and partners with the resources to turn ideas into profitable services…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 3 contacts → | ||||
Exact match “RosettaHub is a multi-cloud operating system for FinOps, governance and self-service across hyperscalers, GPU and AI clouds, sovereign clouds and open-source private clouds.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 2 contacts → | ||||
Exact match “Cloud Services Management Platform and marketpalce” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 2 contacts → | ||||
Exact match “OpenFaaS Ltd is a Software company focused on Cloud Native technology, open source innovation and developer-experience.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 1 contacts → | ||||
Exact match “CTOs often turn to the public cloud because they're hamstrung by budgets, or lack in-house capability.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 1 contacts → | ||||
Exact match “Cloud Infrastructure Automation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 1 contacts → | ||||
Exact match “Provides bespoke solutions to cloud infrastructure.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 1 contacts → | ||||
Exact match “Equahost provides enterprise class hosting and managed services built on the public cloud.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 1 contacts → | ||||
Exact match “Blackbox Thinking specialises in open source technologies and works with our clients to deliver cost effective solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 1 contacts → | ||||
Exact match “TECNICK.COM LTD is an Open Source Software development company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “open source cloud infrastructure companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 21 of 57 open source cloud infrastructure companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 141 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Open source cloud infrastructure companies based in the United Kingdom at a glance
As of Nov 5, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 57 companies.
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 the United Kingdom whose business descriptions match “open source cloud infrastructure 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 141 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 November 5, 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.
Open source cloud infrastructure companies by metro
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 “open source cloud infrastructure companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many open source cloud infrastructure companies are there based in the United Kingdom?
RevenueBase identified 57 company matches for open source cloud infrastructure companies associated with the United Kingdom as of November 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?
CIVO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most open source cloud infrastructure companies?
London leads with 32 company records, followed by Bracknell (2) and Manchester (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 141 professional contacts with verified work emails tracked across these 57 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 November 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 57 open source cloud infrastructure companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Open source cloud infrastructure companies by geography
- Open source cloud infrastructure companies based in the United States
- Open source cloud infrastructure companies based in Germany
- Open source cloud infrastructure companies based in France
- Open source cloud infrastructure companies based in Brazil
- Open source cloud infrastructure companies based in the Netherlands
- Open source cloud infrastructure companies based in London, United Kingdom
- Open source cloud infrastructure companies based in India
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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- Open source cloud infrastructure companies based in the United States
- Open source cloud infrastructure companies based in Germany
- Open source cloud infrastructure companies based in France
- Open source cloud infrastructure companies based in Brazil
- Open source cloud infrastructure companies based in the Netherlands
- Open source cloud infrastructure companies based in London, United Kingdom
Company intelligence · public preview
Top 21 open source cloud infrastructure companies based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 57 matching company records for open source cloud infrastructure companies based in the United Kingdom, with 341 tracked contacts and 141 verified work emails.
This public preview shows 21 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 21 open source cloud infrastructure companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  CIVOcivo.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 68 contacts → |
“Civo is the Sovereign Cloud and AI platform that frees you to build without limits.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Shapeblueshapeblue.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 30 contacts → |
“ShapeBlue is the largest independent integrator of CloudStack technologies globally.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Stackhpcstackhpc.comHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 29 contacts → |
“StackHPC is one of the leading OpenStack consultancies working with research institutions worldwide.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Arjuna Technologiesarjuna.comHQ: Newcastle Upon Tyne, United KingdomReported employees: 11-50 | Newcastle Upon Tyne, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Arjuna Technologies Limited is a world leading innovator in distributed computing and has an international reputation for delivering mission-critical products to global software…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Flax & Teal Limitedflaxandteal.co.ukHQ: Belfast, United KingdomReported employees: 1-10 | Belfast, United Kingdom | 1-10 | Exact match | 19 contacts → |
“Flax & Teal Limited is focused on open technology and its ability to transform business and society, through efficiency and interlinking.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  KITSkeepitsimple-uk.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 14 contacts → |
“Keep IT Simple (KITS), a TPXimpact company, delivers secure, inclusive and outcome-focused digital transformation services for Government and public sector organisations.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Blackbox Hosting LTDblackboxhosting.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 13 contacts → |
“Private Cloud Infrastructure.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Qumulus Cloud Platformqumulus.ioHQ: Lowry Mill, United KingdomReported employees: 1-10 | Lowry Mill, United Kingdom | 1-10 | Exact match | 13 contacts → |
“Open, Affordable, Predictable.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Scalebladescaleblade.comHQ: England, United KingdomReported employees: 1-10 | England, United Kingdom | 1-10 | Exact match | 5 contacts → |
“At Scaleblade we are developing a suite of cloud compute tools to help keep you (and your business) online.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Devito Codesdevitocodes.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Devito Codes Ltd is the commercial arm of the open-source platform Devito.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Flexiscale Technologiesflexiscale.comHQ: Nottingham, United KingdomReported employees: 11-50 | Nottingham, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Flexiscale offers innovative cloud solutions to increase revenues and profits by arming our customers and partners with the resources to turn ideas into profitable services…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Rosettahubrosettahub.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 3 contacts → |
“RosettaHub is a multi-cloud operating system for FinOps, governance and self-service across hyperscalers, GPU and AI clouds, sovereign clouds and open-source private clouds.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Cloud In The Channelcloudinthechannel.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 2 contacts → |
“Cloud Services Management Platform and marketpalce” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Openfaasopenfaas.comHQ: Peterborough, United KingdomReported employees: 1-10 | Peterborough, United Kingdom | 1-10 | Exact match | 2 contacts → |
“OpenFaaS Ltd is a Software company focused on Cloud Native technology, open source innovation and developer-experience.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Obsidian Systems LTDobsidian.co.zaHQ: Finchley, United KingdomReported employees: 51-200 | Finchley, United Kingdom | 51-200 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 |  IT Systems Researchitsr.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“CTOs often turn to the public cloud because they're hamstrung by budgets, or lack in-house capability.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Dcloud9 LTDdcloud9.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Cloud Infrastructure Automation.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Datarch UK LTDdatarch.comHQ: Bromley, United KingdomReported employees: 1-10 | Bromley, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Provides bespoke solutions to cloud infrastructure.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Equahostequahost.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Equahost provides enterprise class hosting and managed services built on the public cloud.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Blackbox Thinkingblackboxthinking.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Blackbox Thinking specialises in open source technologies and works with our clients to deliver cost effective solutions.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Tecnick.com LTDtecnick.comHQ: Reading, United KingdomReported employees: 1-10 | Reading, United Kingdom | 1-10 | Exact match | 1 contacts → |
“TECNICK.COM LTD is an Open Source Software development company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 57 company matches
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Open source cloud infrastructure companies: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
57 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 57 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Open source cloud infrastructure companies by metro
Questions about this company list
What does Exact match mean for open source cloud infrastructure companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many open source cloud infrastructure companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 57 matching company records, 341 tracked contacts and 141 verified emails. The public preview displays 21 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Open source cloud infrastructure companies by geography
- Open source cloud infrastructure companies based in the United States
- Open source cloud infrastructure companies based in Germany
- Open source cloud infrastructure companies based in France
- Open source cloud infrastructure companies based in Brazil
- Open source cloud infrastructure companies based in the Netherlands
- Open source cloud infrastructure companies based in London, United Kingdom
- Open source cloud infrastructure companies based in India
Cite this list
RevenueBase Data Team. Top 21 open source cloud infrastructure companies based in the United Kingdom. Snapshot: November 5, 2026. https://revenuebase.ai/companies/open-source-cloud-infrastructure-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Open source cloud infrastructure companies based in the United States
- Open source cloud infrastructure companies based in Germany
- Open source cloud infrastructure companies based in France
- Open source cloud infrastructure companies based in Brazil
- Open source cloud infrastructure companies based in the Netherlands
- Open source cloud infrastructure companies based in London, United Kingdom
Company intelligence · public preview
Top 21 open source cloud infrastructure companies based in the United Kingdom
RevenueBase records 57 matching company records for open source cloud infrastructure companies based in the United Kingdom, with 341 tracked contacts and 141 verified work emails.
This public preview shows 21 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 21 open source cloud infrastructure companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | CIVOcivo.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 68 contacts → |
“Civo is the Sovereign Cloud and AI platform that frees you to build without limits.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Shapeblueshapeblue.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 30 contacts → |
“ShapeBlue is the largest independent integrator of CloudStack technologies globally.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Stackhpcstackhpc.com HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 29 contacts → |
“StackHPC is one of the leading OpenStack consultancies working with research institutions worldwide.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Arjuna Technologiesarjuna.com HQ: Newcastle Upon Tyne, United KingdomReported employees: 11-50 | Newcastle Upon Tyne, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Arjuna Technologies Limited is a world leading innovator in distributed computing and has an international reputation for delivering mission-critical products to global software…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Flax & Teal Limitedflaxandteal.co.uk HQ: Belfast, United KingdomReported employees: 1-10 | Belfast, United Kingdom | 1-10 | Exact match | 19 contacts → |
“Flax & Teal Limited is focused on open technology and its ability to transform business and society, through efficiency and interlinking.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | KITSkeepitsimple-uk.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 14 contacts → |
“Keep IT Simple (KITS), a TPXimpact company, delivers secure, inclusive and outcome-focused digital transformation services for Government and public sector organisations.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Blackbox Hosting LTDblackboxhosting.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 13 contacts → |
“Private Cloud Infrastructure.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Qumulus Cloud Platformqumulus.io HQ: Lowry Mill, United KingdomReported employees: 1-10 | Lowry Mill, United Kingdom | 1-10 | Exact match | 13 contacts → |
“Open, Affordable, Predictable.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Scalebladescaleblade.com HQ: England, United KingdomReported employees: 1-10 | England, United Kingdom | 1-10 | Exact match | 5 contacts → |
“At Scaleblade we are developing a suite of cloud compute tools to help keep you (and your business) online.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Devito Codesdevitocodes.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Devito Codes Ltd is the commercial arm of the open-source platform Devito.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Flexiscale Technologiesflexiscale.com HQ: Nottingham, United KingdomReported employees: 11-50 | Nottingham, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Flexiscale offers innovative cloud solutions to increase revenues and profits by arming our customers and partners with the resources to turn ideas into profitable services…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Rosettahubrosettahub.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 3 contacts → |
“RosettaHub is a multi-cloud operating system for FinOps, governance and self-service across hyperscalers, GPU and AI clouds, sovereign clouds and open-source private clouds.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Cloud In The Channelcloudinthechannel.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 2 contacts → |
“Cloud Services Management Platform and marketpalce” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Openfaasopenfaas.com HQ: Peterborough, United KingdomReported employees: 1-10 | Peterborough, United Kingdom | 1-10 | Exact match | 2 contacts → |
“OpenFaaS Ltd is a Software company focused on Cloud Native technology, open source innovation and developer-experience.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Obsidian Systems LTDobsidian.co.za HQ: Finchley, United KingdomReported employees: 51-200 | Finchley, United Kingdom | 51-200 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | IT Systems Researchitsr.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“CTOs often turn to the public cloud because they're hamstrung by budgets, or lack in-house capability.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Dcloud9 LTDdcloud9.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Cloud Infrastructure Automation.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Datarch UK LTDdatarch.com HQ: Bromley, United KingdomReported employees: 1-10 | Bromley, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Provides bespoke solutions to cloud infrastructure.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Equahostequahost.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Equahost provides enterprise class hosting and managed services built on the public cloud.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Blackbox Thinkingblackboxthinking.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Blackbox Thinking specialises in open source technologies and works with our clients to deliver cost effective solutions.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Tecnick.com LTDtecnick.com HQ: Reading, United KingdomReported employees: 1-10 | Reading, United Kingdom | 1-10 | Exact match | 1 contacts → |
“TECNICK.COM LTD is an Open Source Software development company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 57 company matches
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Open source cloud infrastructure companies: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
57 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 57 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Open source cloud infrastructure companies by metro
Questions about this company list
What does Exact match mean for open source cloud infrastructure companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many open source cloud infrastructure companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 57 matching company records, 341 tracked contacts and 141 verified emails. The public preview displays 21 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Open source cloud infrastructure companies by geography
- Open source cloud infrastructure companies based in the United States
- Open source cloud infrastructure companies based in Germany
- Open source cloud infrastructure companies based in France
- Open source cloud infrastructure companies based in Brazil
- Open source cloud infrastructure companies based in the Netherlands
- Open source cloud infrastructure companies based in London, United Kingdom
- Open source cloud infrastructure companies based in India
Cite this list
RevenueBase Data Team. Top 21 open source cloud infrastructure companies based in the United Kingdom. Snapshot: November 5, 2026. https://revenuebase.ai/companies/open-source-cloud-infrastructure-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Open source cloud infrastructure companies based in the United States
- Open source cloud infrastructure companies based in Germany
- Open source cloud infrastructure companies based in France
- Open source cloud infrastructure companies based in Brazil
- Open source cloud infrastructure companies based in the Netherlands
- Open source cloud infrastructure companies based in London, United Kingdom