Company lists · Data refreshed September 2026

Top 25 Open source cloud infrastructure companies based in the United States

Name: Open source cloud infrastructure companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 159 companies tracked

RevenueBase identified 159 open source cloud infrastructure companies headquartered in the United States as of September 2026 and tracks 28,058 professional contacts across them, including 12,893 with verified work emails and 6,646 with mobile numbers. San Francisco is the largest hub.

This list covers open source cloud infrastructure companies headquartered in the United States, 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 5, 2026.

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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

159Companies

28,058Contacts tracked

12,893Verified emails

6,646Mobile numbers

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The 25 largest open source cloud infrastructure companies based in the United States

Ranked by team size

Top 25 of 159 open source cloud infrastructure companies based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to open source cloud infrastructure companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	RED HAT	Strong evidence	Raleigh, NC, United StatesHQ checked Sep 5, 2026	10001+	24,404 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 5, 2026
2	Hashicorp	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,541 contacts →
	Strong evidence “At HashiCorp, we believe infrastructure enables innovation, and we are helping organizations to operate that infrastructure in the cloud.” Source: RevenueBase Database · checked Sep 5, 2026
3	Platform9	Partial evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	51-200	149 contacts →
	Partial evidence “Platform9 is the leader in simplifying enterprise Private Clouds.” Source: RevenueBase Database · checked Sep 5, 2026
4	Unitedlayer	Strong evidence	Santa Clara, CA, United StatesHQ checked Sep 5, 2026	201-500	146 contacts →
	Strong evidence “UnitedLayer is the world’s leading private cloud solution provider, empowering enterprises with secure, high-performance infrastructure powered by the latest Agentic AI…” Source: RevenueBase Database · checked Sep 5, 2026
5	Netapp Instaclustr	Strong evidence	Redwood City, CA, United StatesHQ checked Sep 5, 2026	201-500	134 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 5, 2026
6	Nuvolat Cloud Group	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 5, 2026	51-200	126 contacts →
	Partial evidence “Nuvolat® brings together leading experts from the world of cloud, datacenter and IT services.” Source: RevenueBase Database · checked Sep 5, 2026
7	CIQ	Partial evidence	Reno, NV, United StatesHQ checked Sep 5, 2026	51-200	125 contacts →
	Partial evidence “CIQ is building the next-generation of secure and performant software infrastructure for the AI era.” Source: RevenueBase Database · checked Sep 5, 2026
8	Overclock Labs, Creators Of Akash Network	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	11-50	122 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 5, 2026
9	Joyent	Strong evidence	Mountain View, CA, United StatesHQ checked Sep 5, 2026	51-200	120 contacts →
	Strong evidence “Joyent, a wholly-owned subsidiary of Samsung, is a provider of modern, open cloud infrastructure as a service.” Source: RevenueBase Database · checked Sep 5, 2026
10	Pulumi	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	51-200	115 contacts →
	Partial evidence “Our mission is to democratize the cloud for every engineer.” Source: RevenueBase Database · checked Sep 5, 2026
11	Linode	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	5,001-10,000	103 contacts →
	Partial evidence “Linode is now Akamai Cloud, the world’s most distributed cloud platform.” Source: RevenueBase Database · checked Sep 5, 2026
12	Rancher	Strong evidence	San Jose, AZ, United StatesHQ checked Sep 5, 2026	1,001-5,000	103 contacts →
	Strong evidence “Rancher, a proud member of the SUSE family since 2020, creates open source container management solutions that streamline software development and simplify IT operations for…” Source: RevenueBase Database · checked Sep 5, 2026
13	Layer5	Partial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	n/a	67 contacts →
	Partial evidence “At Layer5, we champion developer-defined infrastructure, giving engineers the power to reshape application delivery.” Source: RevenueBase Database · checked Sep 5, 2026
14	Netactuate	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 5, 2026	51-200	56 contacts →
	Partial evidence “NetActuate delivers edge infrastructure and network solutions in over 45 locations worldwide, enabling customers to take control of their workloads anywhere with low latency…” Source: RevenueBase Database · checked Sep 5, 2026
15	Ansible By RED HAT	Strong evidence	Durham, NC, United StatesHQ checked Sep 5, 2026	n/a	49 contacts →
	Strong evidence “Ansible, the most popular open source IT automation project on GitHub, is a radically simple automation engine that automates cloud provisioning, configuration management…” Source: RevenueBase Database · checked Sep 5, 2026
16	Nexenta By DDN	Strong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	201-500	47 contacts →
	Strong evidence “Nexenta is the market creator and leader in Open Software-Defined Storage (OpenSDS) software solutions for Hybrid and Multi Cloud enterprise environments via Nexenta AnyCloud…” Source: RevenueBase Database · checked Sep 5, 2026
17	ONE Convergence	Strong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	51-200	42 contacts →
	Strong evidence “One Convergence™ provides infrastructure solutions to optimize the cloud-native data center.” Source: RevenueBase Database · checked Sep 5, 2026
18	Pgedge	Strong evidence	Alexandria, VA, United StatesHQ checked Sep 5, 2026	11-50	30 contacts →
	Strong evidence “pgEdge delivers open-source, 100% Postgres infrastructure for Agentic AI and other enterprise applications that demand high availability, reliability, and/or data sovereignty.” Source: RevenueBase Database · checked Sep 5, 2026
19	Control Plane Corporation	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	11-50	30 contacts →
	Strong evidence “Control Plane is a cloud virtualization platform that enables devops teams to compose any combination of cloud infrastructure - bare metal, VMs, k8s, AWS, GCP, Azure, OCI - into…” Source: RevenueBase Database · checked Sep 5, 2026
20	DATUM	Strong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	11-50	20 contacts →
	Strong evidence “Datum is building the world’s first open network cloud, a neutral place where Alt Clouds, tech incumbents, and digital leaders can programmatically interact with their unique…” Source: RevenueBase Database · checked Sep 5, 2026
21	Openmetal	Strong evidence	Virginia Beach, VA, United StatesHQ checked Sep 5, 2026	11-50	16 contacts →
	Strong evidence “OpenMetal delivers hosted private cloud and bare metal infrastructure that gives organizations a real alternative to building their own private cloud or committing to a…” Source: RevenueBase Database · checked Sep 5, 2026
22	13 Blox	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	11-50	15 contacts →
	Strong evidence “Open Source based value exchange is at the core of all that we do at 13BloX.” Source: RevenueBase Database · checked Sep 5, 2026
23	Ubicloud	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	11-50	14 contacts →
	Strong evidence “Open, free, and portable cloud” Source: RevenueBase Database · checked Sep 5, 2026
24	N3bula Systems	Strong evidence	Colorado Springs, CO, United StatesHQ checked Sep 5, 2026	11-50	14 contacts →
	Strong evidence “IT Consulting company who specializes in Infrastructure as a Service utilizing Open Source software.” Source: RevenueBase Database · checked Sep 5, 2026
25	Tech 2 Success	Partial evidence	Glendale, United StatesHQ checked Sep 5, 2026	11-50	13 contacts →
	Partial evidence “Tech 2 Success provides Private Cloud Hosting and IT & Project Management Consulting to businesses of all sizes.” Source: RevenueBase Database · checked Sep 5, 2026

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: open source cloud infrastructure 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 open source cloud infrastructure companies.
Partial evidence: Its own public description names part of open source cloud infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name open source cloud infrastructure 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 159 open source cloud infrastructure companies based in the United States

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Open source cloud infrastructure companies based in the United States at a glance

As of Sep 5, 2026

46.0%Verified-email coverage

23.7%Mobile-number coverage

176.5Average contacts per company

11-50Median size (employees)

10.7%Largest-city concentration · San Francisco

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

11,8000–30

79231–60

3961–90

1290–180

250180+

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 open source cloud infrastructure 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “open source cloud infrastructure 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 open source cloud infrastructure 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 open source cloud infrastructure companies, and records with no verified work email. Companies headquartered outside United States 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 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, 12,893 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

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 open source cloud infrastructure 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 open source cloud infrastructure companies are there based in the United States?

RevenueBase identified 159 open source cloud infrastructure companies headquartered in the United States 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?

RED HAT, headquartered in Raleigh, tops this list with the largest team on record.

Which city has the most open source cloud infrastructure companies?

San Francisco leads with 17 headquartered companies, followed by New York (9) and Santa Clara (5).

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 12,893 verified decision-maker contacts tracked across these 159 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 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.