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, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

159Companies

28,058Contacts tracked

12,893Verified emails

6,646Mobile numbers

Unlock all 159 companies Free signup · no credit card · 500 free credits

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. Evidence rates how directly each company's own description names open source cloud infrastructure companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	RED HATStrong evidence	Raleigh, NC, United StatesHQ checked Sep 5, 2026	10001+	24,404
	“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: company website · checked Sep 5, 2026
2	HashicorpStrong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,541
	“At HashiCorp, we believe infrastructure enables innovation, and we are helping organizations to operate that infrastructure in the cloud.” Source: company website · checked Sep 5, 2026
3	Platform9Partial evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	51-200	149
	“Platform9 is the leader in simplifying enterprise Private Clouds.” Source: company website · checked Sep 5, 2026
4	UnitedlayerStrong evidence	Santa Clara, CA, United StatesHQ checked Sep 5, 2026	201-500	146
	“UnitedLayer is the world’s leading private cloud solution provider, empowering enterprises with secure, high-performance infrastructure powered by the latest Agentic AI…” Source: company website · checked Sep 5, 2026
5	Netapp InstaclustrStrong evidence	Redwood City, CA, United StatesHQ checked Sep 5, 2026	201-500	134
	“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: company website · checked Sep 5, 2026
6	Nuvolat Cloud GroupPartial evidence	Pittsburgh, PA, United StatesHQ checked Sep 5, 2026	51-200	126
	“Nuvolat® brings together leading experts from the world of cloud, datacenter and IT services.” Source: company website · checked Sep 5, 2026
7	CIQPartial evidence	Reno, NV, United StatesHQ checked Sep 5, 2026	51-200	125
	“CIQ is building the next-generation of secure and performant software infrastructure for the AI era.” Source: company website · checked Sep 5, 2026
8	Overclock Labs, Creators Of Akash NetworkPartial evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	11-50	122
	“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: company website · checked Sep 5, 2026
9	JoyentStrong evidence	Mountain View, CA, United StatesHQ checked Sep 5, 2026	51-200	120
	“Joyent, a wholly-owned subsidiary of Samsung, is a provider of modern, open cloud infrastructure as a service.” Source: company website · checked Sep 5, 2026
10	PulumiPartial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	51-200	115
	“Our mission is to democratize the cloud for every engineer.” Source: company website · checked Sep 5, 2026
11	LinodePartial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	5,001-10,000	103
	“Linode is now Akamai Cloud, the world’s most distributed cloud platform.” Source: company website · checked Sep 5, 2026
12	RancherStrong evidence	San Jose, AZ, United StatesHQ checked Sep 5, 2026	1,001-5,000	103
	“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: company website · checked Sep 5, 2026
13	Layer5Partial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	n/a	67
	“At Layer5, we champion developer-defined infrastructure, giving engineers the power to reshape application delivery.” Source: company website · checked Sep 5, 2026
14	NetactuatePartial evidence	Raleigh, NC, United StatesHQ checked Sep 5, 2026	51-200	56
	“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: company website · checked Sep 5, 2026
15	Ansible By RED HATStrong evidence	Durham, NC, United StatesHQ checked Sep 5, 2026	n/a	49
	“Ansible, the most popular open source IT automation project on GitHub, is a radically simple automation engine that automates cloud provisioning, configuration management…” Source: company website · checked Sep 5, 2026
16	Nexenta By DDNStrong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	201-500	47
	“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: company website · checked Sep 5, 2026
17	ONE ConvergenceStrong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	51-200	42
	“One Convergence™ provides infrastructure solutions to optimize the cloud-native data center.” Source: company website · checked Sep 5, 2026
18	PgedgeStrong evidence	Alexandria, VA, United StatesHQ checked Sep 5, 2026	11-50	30
	“pgEdge delivers open-source, 100% Postgres infrastructure for Agentic AI and other enterprise applications that demand high availability, reliability, and/or data sovereignty.” Source: company website · checked Sep 5, 2026
19	Control Plane CorporationStrong evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	11-50	30
	“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: company website · checked Sep 5, 2026
20	DATUMStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	11-50	20
	“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: company website · checked Sep 5, 2026
21	OpenmetalStrong evidence	Virginia Beach, VA, United StatesHQ checked Sep 5, 2026	11-50	16
	“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: company website · checked Sep 5, 2026
22	13 BloxStrong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	11-50	15
	“Open Source based value exchange is at the core of all that we do at 13BloX.” Source: company website · checked Sep 5, 2026
23	UbicloudStrong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	11-50	14
	“Open, free, and portable cloud” Source: company website · checked Sep 5, 2026
24	N3bula SystemsStrong evidence	Colorado Springs, CO, United StatesHQ checked Sep 5, 2026	11-50	14
	“IT Consulting company who specializes in Infrastructure as a Service utilizing Open Source software.” Source: company website · checked Sep 5, 2026
25	Tech 2 SuccessPartial evidence	Glendale, United StatesHQ checked Sep 5, 2026	11-50	13
	“Tech 2 Success provides Private Cloud Hosting and IT & Project Management Consulting to businesses of all sizes.” Source: company website · checked Sep 5, 2026

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

11-50Median size (employees)

San FranciscoLargest hub · 17 HQs

6,646Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

11,800

31–60

792

61–90

90–180

180+

250

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 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 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.
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 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, 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

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 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.