Company lists · Data refreshed September 2026
Top 25 Open source cloud computing companies based in the United States
RevenueBase identified 56 open source cloud computing companies headquartered in the United States as of September 2026 and tracks 27,203 professional contacts across them, including 12,676 with verified work emails and 6,348 with mobile numbers. San Francisco is the largest hub.
This list covers open source cloud computing 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.
The 25 largest open source cloud computing companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | 365 | ||||
“Spektra Systems is an innovation leader in cloud computing products and services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 149 | ||||
“Platform9 is the leader in simplifying enterprise Private Clouds.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 103 | ||||
“Linode is now Akamai Cloud, the world’s most distributed cloud platform.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 67 | ||||
“At Layer5, we champion developer-defined infrastructure, giving engineers the power to reshape application delivery.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 38 | ||||
“SoftIron introduces a new class of public cloud.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 38 | ||||
“VMware Cloud Foundation (VCF) is the platform for the modern private cloud.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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, 2026Thanks. The Data Team will review it. | |||||
| 12 | 26 | ||||
“Parallel Works was founded in 2015 out of Argonne National Laboratory with the goal of democratizing hybrid multi-cloud computing, and a strong focus on commercializing…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | OpenmetalPartial evidence | 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, 2026Thanks. The Data Team will review it. | |||||
| 14 | UbicloudStrong evidence | 14 | |||
“Open, free, and portable cloud” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | N3bula SystemsStrong evidence | 14 | |||
“IT Consulting company who specializes in Infrastructure as a Service utilizing Open Source software.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 12 | ||||
“At CoreSpace our cloud experts customize next-generation IT infrastructures for small and medium businesses (IaaS) using OpenStack, Kubernetes and VMware that surpass industry…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | Nonadyne,incIndirect evidence | 12 | |||
“Nonadyne Inc was founded in 2013.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 9 | ||||
“Welcome to 3HCloud - Your Trusted Cloud Partner Discover the power of OpenStack with 3HCloud, where we deliver industry-leading, flexible, and scalable cloud solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | Platina SystemsPartial evidence | 9 | |||
“Platina is the transformative solution that empowers your organization's hybrid cloud journey.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | HVE ConnexionsPartial evidence | 7 | |||
“HVE ConneXions was created to combine proven virtualization solutions with state of the art, best of breed hardware to support next-generation Cloud requirements.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | Orock Technologies, INCPartial evidence | 6 | |||
“ORock Technologies is a high-performance cloud service provider focused on innovative cloud and artificial intelligence solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | FlightcontrolIndirect evidence | 3 | |||
“The most reliable, powerful, and flexible PaaS, because we deploy to your AWS.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | VoltaserveStrong evidence | 3 | |||
“Open source cloud storage designed for speed, fine-grained permission management, powerful search and real-time collaboration.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | Pextra INCPartial evidence | 3 | |||
“Pextra delivers a sovereign cloud platform that helps organizations modernize infrastructure, simplify operations, and accelerate digital transformation.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | CloudtrekPartial evidence | 2 | |||
“Hybrid Cloud-Microsoft HCI - VMware and everything else.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 56 open source cloud computing companies based in the United States
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Open source cloud computing companies based in the United States 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 open source cloud computing 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 computing 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 computing 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, 12,676 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 computing companies are there based in the United States?
RevenueBase identified 56 open source cloud computing 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 computing companies?
San Francisco leads with 6 headquartered companies, followed by Mountain View (4) and New York (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 12,676 verified decision-maker contacts tracked across these 56 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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