Company lists · Data refreshed November 2026

Top 25 Open source cloud infrastructure companies worldwide

RevenueBase identified 1,257 company matches for open source cloud infrastructure companies worldwide as of November 2026 and tracks 55,651 professional contacts across them, including 25,238 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for open source cloud infrastructure companies worldwide, 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. Country and city lists for open source cloud infrastructure companies follow the table.

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 Nov 5, 2026 How this list was built
1,257Companies
55,651Contacts tracked
25,238Verified emails
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The 25 largest open source cloud infrastructure companies worldwide

Ranked by team size
Top 25 of 1,257 company matches for open source cloud infrastructure companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchRaleigh, NC, United StatesHQ recorded Nov 5, 202610001+25,149 contacts →

Exact match

“Red Hat is the world’s leading provider of enterprise open source solutions, using a community-powered approach to deliver high-performing Linux, hybrid cloud, edge, and…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchSan Jose, United StatesHQ recorded Nov 5, 20265,001-10,0009,750 contacts →

Exact match

“Nutanix is a global leader in cloud software, offering organizations a single platform for running apps and data across clouds.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchNuremberg, GermanyHQ recorded Nov 5, 20261,001-5,0002,459 contacts →

Exact match

“SUSE is a global leader of enterprise open source software.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 20261,001-5,0002,130 contacts →

Exact match

“At HashiCorp, we believe infrastructure enables innovation, and we are helping organizations to operate that infrastructure in the cloud.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 2026n/a1,011 contacts →

Exact match

“Railway’s mission is to build the cloud computing stack that unburdens you, so you can focus more on what matters to you.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchKiryat Bialik, IsraelHQ recorded Nov 5, 2026201-500732 contacts →

Exact match

“We are a global cloud services platform provider, providing enterprise-grade cloud infrastructure products to organizations of all types and sizes.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchMoscow, RussiaHQ recorded Nov 5, 2026201-500530 contacts →

Exact match

“Yandex Cloud is a public cloud platform where companies can create and develop projects using Yandex's scalable computing power, advanced technologies, and infrastructure.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchHelsinki, ON, FinlandHQ recorded Nov 5, 2026201-500469 contacts →

Exact match

“Aiven is your AI-ready Open Source Data Platform.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchRedmond, WA, United StatesHQ recorded Nov 5, 2026201-500419 contacts →

Exact match

“Spektra Systems is an innovation leader in cloud computing products and services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchUnited StatesHQ recorded Nov 5, 20261,001-5,000299 contacts →

Exact match

“At Annapurna Labs, we're building the silicon foundation that powers the world's AI and cloud.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchSunnyvale, CA, United StatesHQ recorded Nov 5, 202651-200207 contacts →

Exact match

“AI infrastructure is only valuable when it can be consumed, governed, and monetized.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchBogor, IndonesiaHQ recorded Nov 5, 202651-200187 contacts →

Exact match

“Btech was developed from a vision of ICT utilization that is efficient and environmental-friendly for companies with the main mission to utilize FOSS (Free/Open Source Software)…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchAuckland, New ZealandHQ recorded Nov 5, 2026201-500179 contacts →

Exact match

“We're always on so you're always there.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchSan Jose, United StatesHQ recorded Nov 5, 202651-200166 contacts →

Exact match

“Platform9 is the leader in simplifying enterprise Private Clouds.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchRibeira Brava, PortugalHQ recorded Nov 5, 202651-200166 contacts →

Exact match

“A ACIN - iCloud Solutions é uma empresa de base tecnológica e inovadora que cria, gere e mantém um conjunto de plataformas eletrónicas especificamente desenvolvidas para a Cloud.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchGroningen, NetherlandsHQ recorded Nov 5, 202651-200161 contacts →

Exact match

“Cloud first’ – Software development is tegenwoordig nauw verbonden met de cloud.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchSanta Clara, CA, United StatesHQ recorded Nov 5, 2026201-500156 contacts →

Exact match

“UnitedLayer is the world’s leading private cloud solution provider, empowering enterprises with secure, high-performance infrastructure powered by the latest Agentic AI…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchRedwood City, CA, United StatesHQ recorded Nov 5, 2026201-500148 contacts →

Exact match

“Instaclustr helps companies unlock the true power of open source technologies through its managed platform for deploying, managing, and monitoring all components of their data…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchPutten, NetherlandsHQ recorded Nov 5, 2026501-1,000148 contacts →

Exact match

“OpenText Cordys is a global cloud platform software provider that helps businesses move to the cloud quickly and with minimal risk.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchTehran, IranHQ recorded Nov 5, 202651-200145 contacts →

Exact match

“Sotoon is a privately held company that offers advanced Cloud services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchRichardson, TX, United StatesHQ recorded Nov 5, 202651-200143 contacts →

Exact match

“Matilda Cloud empowers businesses to reduce IT operating costs, accelerate application delivery, and drive digital transformation.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchReno, NV, United StatesHQ recorded Nov 5, 202651-200138 contacts →

Exact match

“CIQ is building the next-generation of secure and performant software infrastructure for the AI era.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchPittsburgh, PA, United StatesHQ recorded Nov 5, 202651-200133 contacts →

Exact match

“Nuvolat® brings together leading experts from the world of cloud, datacenter and IT services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 202611-50128 contacts →

Exact match

“Akash Network, created by Overclock Labs, is a decentralized peer-to-peer marketplace for cloud compute and provides a fast, efficient, and low-cost application deployment…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchPhiladelphia, PA, United StatesHQ recorded Nov 5, 20265,001-10,000127 contacts →

Exact match

“Linode is now Akamai Cloud, the world’s most distributed cloud platform.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 1,257 open source cloud infrastructure companies worldwide

See the full list, filter by size, metro and specialty, and access 25,238 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Open source cloud infrastructure companies worldwide at a glance

As of Nov 5, 2026
45.4%Verified-email coverage
44.3Average contacts per company
11-50Median size (employees)
2.5%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
622
11-50
424
51-200
140
201-500
39
501-1,000
8
1,001-5,000
4
5,001-10,000
3
10001+
11

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for open source cloud infrastructure companies are linked below.
What qualifies
Company records worldwide 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. 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 25,238 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 location

8 lists · largest first

Every Open source cloud infrastructure companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 worldwide?

RevenueBase identified 1,257 company matches for open source cloud infrastructure companies worldwide 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?

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

Which country has the most open source cloud infrastructure companies?

The United States leads with 205 companies, followed by India (124) and Germany (59). Every open source cloud infrastructure companies list by country and city is linked on this page.

Which city has the most open source cloud infrastructure companies?

London leads with 32 company records, followed by Bangalore (17) and San Francisco (17).

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 25,238 professional contacts with verified work emails tracked across these 1,257 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.

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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.