Company lists · Data refreshed November 2026

Top 25 Nuclear simulation software companies worldwide

RevenueBase identified 94 company matches for nuclear simulation software companies worldwide as of November 2026 and tracks 2,014 professional contacts across them, including 521 with verified work emails. The United States is the largest market and Idaho Falls the largest hub.

This list covers company matches for nuclear simulation software 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 nuclear simulation software 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
94Companies
2,014Contacts tracked
521Verified emails
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The 25 largest nuclear simulation software companies worldwide

Ranked by team size
Top 25 of 94 company matches for nuclear simulation software 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 matchColumbia, MD, United StatesHQ recorded Nov 5, 2026201-500451 contacts →

Exact match

“GSE Solutions supports nuclear power and clean-energy fleets worldwide through integrated engineering services and software that strengthen operational performance.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchSwedenHQ recorded Nov 5, 2026501-1,000211 contacts →

Exact match

“Studsvik offers a range of advanced technical services to the global nuclear power industry.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchFranceHQ recorded Nov 5, 20265,001-10,000187 contacts →

Exact match

“Nuclear for naval propulsion and peacefull research.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202651-20067 contacts →

Exact match

“NANO Nuclear Energy Inc.(NASDAQ: NNE) NANO Nuclear Energy Inc.(NASDAQ: NNE) is a North American advanced technology-driven nuclear energy company seeking to become a commercially…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchPhoenix, AZ, United StatesHQ recorded Nov 5, 202611-5045 contacts →

Exact match

“With over 60 reactors around the world relying on our technology, Nuclearn is built on one simple idea: nuclear deserves better tools.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchPozuelo De Alarcón, SpainHQ recorded Nov 5, 202611-5036 contacts →

Exact match

“Innomerics develops software and provides services tailored to the electric power generation industry, with a focus on the nuclear and hydroelectric sectors.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchPeekskill, NY, United StatesHQ recorded Nov 5, 202611-5034 contacts →

Exact match

“Founded in 1979 and now an EnergySolutions company, WMG, Inc.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchUnited StatesHQ recorded Nov 5, 2026201-50023 contacts →

Exact match

“Ranked among the top 10 global nuclear engineering firms, IDOM has been involved in the nuclear industry since the development of early nuclear generation projects since the late…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchHamilton, ON, CanadaHQ recorded Nov 5, 202611-5022 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchPotchefstroom, South AfricaHQ recorded Nov 5, 202651-20022 contacts →

Exact match

“Flownex® Simulation Environment delivers technology that enables you to study how systems will behave in the real world, where fluid is the driving factor.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchFlekkefjord, NorwayHQ recorded Nov 5, 202611-5017 contacts →

Exact match

“IMPETUS Solver is a modern software system developed to simulate extreme mechanics.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchMontreal, QC, CanadaHQ recorded Nov 5, 202611-5017 contacts →

Exact match

“Nanoacademic Technologies develops and commercialize licenses of advanced atomistic simulation tools to predict the properties of next generation materials and electronic devices.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchCopenhagen, DenmarkHQ recorded Nov 5, 202611-5016 contacts →

Exact match

“The QuantumATK team at Synopsys develops the QuantumATK simulation tool for fast and reliable atomic-scale modeling of nanostructure.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLucca, ItalyHQ recorded Nov 5, 202611-5016 contacts →

Exact match

“NINE Nuclear and Industrial Engineering Srl is an Italian engineering company based in Lucca and operating in the area of nuclear reactor safety, design and decommissioning.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-1015 contacts →

Exact match

“Quantemol was founded by University College London's Prof.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchRome, ItalyHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“Our mission at CAELUS is clear: we're here to enable the nuclear industry to thrive.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchSaint-paul-lez-durance, FranceHQ recorded Nov 5, 20261-109 contacts →

Exact match

“Build Nuclear With XR!”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchSycamore, IL, United StatesHQ recorded Nov 5, 202611-509 contacts →

Exact match

“Whether your goal is to maintain an existing reactor, decommission an old reactor, or design a new one, TransWare Enterprises Inc.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchGig Harbor, WA, United StatesHQ recorded Nov 5, 20261-109 contacts →

Exact match

“We are the developers of the Attila4MC software, which can substantially improve MCNP® analysis productivity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchLenoir City, TN, United StatesHQ recorded Nov 5, 20261-108 contacts →

Exact match

“Veracity Nuclear brings game-changing technology to bear on problems that remain unsolved by traditional modeling and simulation used by the nuclear industry.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchGundremmingen, GermanyHQ recorded Nov 5, 202611-508 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchGraz, AustriaHQ recorded Nov 5, 20261-107 contacts →

Exact match

“SimVantage stands for a next-generation, easy-to-use simulation software and profound expertise in the simulation-based design and optimization of gassed and/or stirred reactors.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchMunich, GermanyHQ recorded Nov 5, 202611-506 contacts →

Exact match

“nextnano is a leading provider of advanced simulation software for the nanoelectronics industry.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchEllange, LuxembourgHQ recorded Nov 5, 20261-106 contacts →

Exact match

“SPARC Industries is developing a high fidelity plasma simulation software tailored to the needs of electric propulsion market with a product release in 2022.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchAustin, TX, United StatesHQ recorded Nov 5, 202611-505 contacts →

Exact match

Recorded description not available.

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

Showing 25 of 94 nuclear simulation software companies worldwide

See the full list, filter by size, metro and specialty, and access 521 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nuclear simulation software companies worldwide at a glance

As of Nov 5, 2026
25.9%Verified-email coverage
21.4Average contacts per company
1-10Median size (employees)
4.3%Largest-city concentration · Idaho Falls
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
52
11-50
24
51-200
10
201-500
4
501-1,000
1
5,001-10,000
1

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 nuclear simulation software companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “nuclear simulation software 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 521 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.

Nuclear simulation software companies by location

1 lists · largest first

Every Nuclear simulation software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “nuclear simulation software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many nuclear simulation software companies are there worldwide?

RevenueBase identified 94 company matches for nuclear simulation software 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?

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

Which country has the most nuclear simulation software companies?

The United States leads with 29 companies. Every nuclear simulation software companies list by country and city is linked on this page.

Which city has the most nuclear simulation software companies?

Idaho Falls leads with 4 company records, followed by Copenhagen (2) and Frederick (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 521 professional contacts with verified work emails tracked across these 94 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.