Company lists · Data refreshed October 2026
Top 25 Post-quantum cryptography software companies based in the United States
RevenueBase identified 118 company matches for post-quantum cryptography software companies associated with the United States as of October 2026 and tracks 923 professional contacts across them, including 348 with verified work emails. New York is the largest hub.
This list covers company matches for post-quantum cryptography software companies associated with the United States, 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 October 20, 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 post-quantum cryptography software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 67 contacts → | ||||
Exact match “Vector Atomic is commercializing quantum technology for applications including GPS-free navigation, telecommunications, and computing.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 2 | 57 contacts → | ||||
Exact match “For years, security leaders have been told that preparing for post-quantum cryptography (PQC) would take years, cost millions and require deep in-house expertise.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 3 | 45 contacts → | ||||
Exact match “wolfSSL, the best-tested cryptography, provides embedded security solutions emphasizing speed, size, portability, features, and standards compliance.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 4 | 42 contacts → | ||||
Exact match “QC Ware is a quantum computing software company building enterprise solutions.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 5 | 38 contacts → | ||||
Exact match “Eternal Encryption.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 6 | 33 contacts → | ||||
Exact match “Aliro, The Quantum Networking Company®, offers AliroNet® to run entanglement-based Quantum Networks for applications such as Quantum Secure Communications (QSC), secure access to…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 7 | 32 contacts → | ||||
Exact match “Eclypses is redefining data security for the AI and quantum era.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 8 | 22 contacts → | ||||
Exact match “SafeLogic’s proven and validated cryptographic solutions enable enduring privacy and trust in the ever-changing digital world.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 9 | 22 contacts → | ||||
Exact match “Haiqu is a quantum software company developing a new application execution stack for all modalities of near-term quantum computers.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 10 | 19 contacts → | ||||
Exact match “Entrokey leverages generative AI to produce quantum-resistant random sequences, ensuring enhanced security against future quantum threats.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 11 | 16 contacts → | ||||
Exact match “Quantum XChange protects the world’s data in motion from advances in computing and everyday cybersecurity risks.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 12 | 15 contacts → | ||||
Exact match “Garantir is an enterprise cybersecurity company that unifies an organization’s cryptographic operations on a single platform.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 13 | 15 contacts → | ||||
Exact match “EndoSec LLC specializes in products for hardware intrinsic security and cryptography plus services for security design and AT planning.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 14 | 15 contacts → | ||||
Exact match “Security audits, development, and research for ZKP, FHE, PQC, and MPC applications, and more generally advanced cryptography.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 15 | 14 contacts → | ||||
Exact match “At Secured Quantum Services (SQS), we are at the forefront of building quantum-secure infrastructure for the future.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 16 | 13 contacts → | ||||
Exact match “The EnQuanta quantum cyber resilience products are software-only integrations that eliminate the need for either custom hardware or networked callbacks.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 17 | 12 contacts → | ||||
Exact match “Since 2008, Stealth Software Technologies Inc.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 18 | 12 contacts → | ||||
Exact match “XSOC CORP is at the forefront of cyber-resilient solutions, delivering quantum-resistant, next-generation encryption technologies that safeguard critical data across both…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 19 | 11 contacts → | ||||
Exact match “FortifyIQ cryptographic implementations deliver high-assurance side-channel and fault-injection resistance with minimal overhead compared to conventional implementations…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 20 | 10 contacts → | ||||
Exact match “To secure our most vulnerable critical infrastructures, we at Kloch provide innovative encryption solutions to safeguard operational technology (OT) systems with unmatched…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 21 | 10 contacts → | ||||
Exact match “The US government has mandated that agencies and enterprises responsible for critical infrastructure upgrade cryptography to protect against current and future quantum-based…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 22 | 8 contacts → | ||||
Exact match “With a focus on cutting-edge cryptography and user-centric design, SENTRIQS empowers organizations to protect their most sensitive information into the quantum age.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 23 | 8 contacts → | ||||
Exact match “The QuSmart GENESIS Governance Agent is an Immutable Agent Governance Orchestrator.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 24 | 7 contacts → | ||||
Exact match “At Donoma, we believe that an organization's greatest asset is its intellectual property and collective intelligence of its workforce.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 25 | 7 contacts → | ||||
Exact match “Our company was established with the goal of overcoming the critical situation of all businesses related to Information Security and Finace.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “post-quantum cryptography software companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 118 post-quantum cryptography software companies based in the United States
See the full list, filter by size, metro and specialty, and access 348 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Post-quantum cryptography software companies based in the United States at a glance
As of Oct 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 118 companies.
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.
- What qualifies
- Company records associated with the United States whose business descriptions match “post-quantum cryptography 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 348 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 October 20, 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.
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 “post-quantum cryptography software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many post-quantum cryptography software companies are there based in the United States?
RevenueBase identified 118 company matches for post-quantum cryptography software companies associated with the United States as of October 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?
Vector Atomic tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most post-quantum cryptography software companies?
New York leads with 7 company records, followed by Austin (5) and Washington (4).
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 348 professional contacts with verified work emails tracked across these 118 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 October 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 118 post-quantum cryptography software companies based in the United States. Start with a free account, no credit card.
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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.
More company lists
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- Post-quantum cryptography software companies based in Canada
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Company intelligence · public preview
Top 25 post-quantum cryptography software companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 118 matching company records for post-quantum cryptography software companies based in the United States, with 923 tracked contacts and 348 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 post-quantum cryptography software companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Vector Atomicvectoratomic.comHQ: Pleasanton, CA, United StatesReported employees: 51-200 | Pleasanton, CA, United States | 51-200 | Exact match | 67 contacts → |
“Vector Atomic is commercializing quantum technology for applications including GPS-free navigation, telecommunications, and computing.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Qusecurequsecure.comHQ: San Mateo, CA, United StatesReported employees: 51-200 | San Mateo, CA, United States | 51-200 | Exact match | 57 contacts → |
“For years, security leaders have been told that preparing for post-quantum cryptography (PQC) would take years, cost millions and require deep in-house expertise.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Wolfsslwolfssl.comHQ: Edmonds, WA, United StatesReported employees: 51-200 | Edmonds, WA, United States | 51-200 | Exact match | 45 contacts → |
“wolfSSL, the best-tested cryptography, provides embedded security solutions emphasizing speed, size, portability, features, and standards compliance.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  QC Ware Corpqcware.comHQ: Palo Alto, CA, United StatesReported employees: 11-50 | Palo Alto, CA, United States | 11-50 | Exact match | 42 contacts → |
“QC Ware is a quantum computing software company building enterprise solutions.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  QRYPTqrypt.comHQ: New York, United StatesReported employees: 11-50 | New York, United States | 11-50 | Exact match | 38 contacts → |
“Eternal Encryption.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  ALIROalirotech.comHQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 33 contacts → |
“Aliro, The Quantum Networking Company®, offers AliroNet® to run entanglement-based Quantum Networks for applications such as Quantum Secure Communications (QSC), secure access to…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Eclypseseclypses.comHQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 32 contacts → |
“Eclypses is redefining data security for the AI and quantum era.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Safelogicsafelogic.comHQ: Vienna, CA, United StatesReported employees: 11-50 | Vienna, CA, United States | 11-50 | Exact match | 22 contacts → |
“SafeLogic’s proven and validated cryptographic solutions enable enduring privacy and trust in the ever-changing digital world.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  HAIQUhaiqu.aiHQ: Brooklyn, United StatesReported employees: 11-50 | Brooklyn, United States | 11-50 | Exact match | 22 contacts → |
“Haiqu is a quantum software company developing a new application execution stack for all modalities of near-term quantum computers.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Entrokey Labsentrokeylabs.comHQ: Mclean, VA, United StatesReported employees: 11-50 | Mclean, VA, United States | 11-50 | Exact match | 19 contacts → |
“Entrokey leverages generative AI to produce quantum-resistant random sequences, ensuring enhanced security against future quantum threats.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Quantum Xchangequantumxc.comHQ: Bethesda, MD, United StatesReported employees: 11-50 | Bethesda, MD, United States | 11-50 | Exact match | 16 contacts → |
“Quantum XChange protects the world’s data in motion from advances in computing and everyday cybersecurity risks.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Garantir Cybersecuritygarantir.ioHQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 15 contacts → |
“Garantir is an enterprise cybersecurity company that unifies an organization’s cryptographic operations on a single platform.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Endosec LLCendosec.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 15 contacts → |
“EndoSec LLC specializes in products for hardware intrinsic security and cryptography plus services for security design and AT planning.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Zksecurityzksecurity.xyzHQ: New York, United StatesReported employees: 11-50 | New York, United States | 11-50 | Exact match | 15 contacts → |
“Security audits, development, and research for ZKP, FHE, PQC, and MPC applications, and more generally advanced cryptography.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Secured Quantum Servicessqs.worldHQ: Colorado Springs, CO, United StatesReported employees: 11-50 | Colorado Springs, CO, United States | 11-50 | Exact match | 14 contacts → |
“At Secured Quantum Services (SQS), we are at the forefront of building quantum-secure infrastructure for the future.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Enquantaenquanta.comHQ: Eden Prairie, MN, United StatesReported employees: 11-50 | Eden Prairie, MN, United States | 11-50 | Exact match | 13 contacts → |
“The EnQuanta quantum cyber resilience products are software-only integrations that eliminate the need for either custom hardware or networked callbacks.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Stealth Software Technologies, INCstealthsoftwareinc.comHQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 12 contacts → |
“Since 2008, Stealth Software Technologies Inc.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Xsoc Corpxsoccorp.comHQ: Irvine, CA, United StatesReported employees: 11-50 | Irvine, CA, United States | 11-50 | Exact match | 12 contacts → |
“XSOC CORP is at the forefront of cyber-resilient solutions, delivering quantum-resistant, next-generation encryption technologies that safeguard critical data across both…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Fortifyiqfortifyiq.comHQ: Salem, MA, United StatesReported employees: 11-50 | Salem, MA, United States | 11-50 | Exact match | 11 contacts → |
“FortifyIQ cryptographic implementations deliver high-assurance side-channel and fault-injection resistance with minimal overhead compared to conventional implementations…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  KLOCHkloch.comHQ: Lakeland, FL, United StatesReported employees: 51-200 | Lakeland, FL, United States | 51-200 | Exact match | 10 contacts → |
“To secure our most vulnerable critical infrastructures, we at Kloch provide innovative encryption solutions to safeguard operational technology (OT) systems with unmatched…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Patero INCpatero.ioHQ: College Park, MD, United StatesReported employees: 1-10 | College Park, MD, United States | 1-10 | Exact match | 10 contacts → |
“The US government has mandated that agencies and enterprises responsible for critical infrastructure upgrade cryptography to protect against current and future quantum-based…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Sentriqssentriqs.comHQ: Savannah, GA, United StatesReported employees: 1-10 | Savannah, GA, United States | 1-10 | Exact match | 8 contacts → |
“With a focus on cutting-edge cryptography and user-centric design, SENTRIQS empowers organizations to protect their most sensitive information into the quantum age.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  qusmart.aiqusmart.aiHQ: Atlanta, GA, United StatesReported employees: 1-10 | Atlanta, GA, United States | 1-10 | Exact match | 8 contacts → |
“The QuSmart GENESIS Governance Agent is an Immutable Agent Governance Orchestrator.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Donoma Softwaredonomasoftware.comHQ: Blacksburg, DC, United StatesReported employees: 11-50 | Blacksburg, DC, United States | 11-50 | Exact match | 7 contacts → |
“At Donoma, we believe that an organization's greatest asset is its intellectual property and collective intelligence of its workforce.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Cipher Core, INCcipher-core.co.jpHQ: Las Vegas, NV, United StatesReported employees: 11-50 | Las Vegas, NV, United States | 11-50 | Exact match | 7 contacts → |
“Our company was established with the goal of overcoming the critical situation of all businesses related to Information Security and Finace.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 118 company matches
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Post-quantum cryptography software companies: dataset insights
October 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
118 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 118 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for post-quantum cryptography software companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many post-quantum cryptography software companies did RevenueBase find based in the United States?
The saved snapshot records 118 matching company records, 923 tracked contacts and 348 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Post-quantum cryptography software companies by geography
Cite this list
RevenueBase Data Team. Top 25 post-quantum cryptography software companies based in the United States. Snapshot: October 20, 2026. https://revenuebase.ai/companies/post-quantum-cryptography-software-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Post-quantum cryptography software companies based in Canada
- Post-quantum cryptography software companies based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
Company intelligence · public preview
Top 25 post-quantum cryptography software companies based in the United States
RevenueBase records 118 matching company records for post-quantum cryptography software companies based in the United States, with 923 tracked contacts and 348 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 post-quantum cryptography software companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Vector Atomicvectoratomic.com HQ: Pleasanton, CA, United StatesReported employees: 51-200 | Pleasanton, CA, United States | 51-200 | Exact match | 67 contacts → |
“Vector Atomic is commercializing quantum technology for applications including GPS-free navigation, telecommunications, and computing.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Qusecurequsecure.com HQ: San Mateo, CA, United StatesReported employees: 51-200 | San Mateo, CA, United States | 51-200 | Exact match | 57 contacts → |
“For years, security leaders have been told that preparing for post-quantum cryptography (PQC) would take years, cost millions and require deep in-house expertise.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Wolfsslwolfssl.com HQ: Edmonds, WA, United StatesReported employees: 51-200 | Edmonds, WA, United States | 51-200 | Exact match | 45 contacts → |
“wolfSSL, the best-tested cryptography, provides embedded security solutions emphasizing speed, size, portability, features, and standards compliance.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | QC Ware Corpqcware.com HQ: Palo Alto, CA, United StatesReported employees: 11-50 | Palo Alto, CA, United States | 11-50 | Exact match | 42 contacts → |
“QC Ware is a quantum computing software company building enterprise solutions.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | QRYPTqrypt.com HQ: New York, United StatesReported employees: 11-50 | New York, United States | 11-50 | Exact match | 38 contacts → |
“Eternal Encryption.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | ALIROalirotech.com HQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 33 contacts → |
“Aliro, The Quantum Networking Company®, offers AliroNet® to run entanglement-based Quantum Networks for applications such as Quantum Secure Communications (QSC), secure access to…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Eclypseseclypses.com HQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 32 contacts → |
“Eclypses is redefining data security for the AI and quantum era.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Safelogicsafelogic.com HQ: Vienna, CA, United StatesReported employees: 11-50 | Vienna, CA, United States | 11-50 | Exact match | 22 contacts → |
“SafeLogic’s proven and validated cryptographic solutions enable enduring privacy and trust in the ever-changing digital world.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HAIQUhaiqu.ai HQ: Brooklyn, United StatesReported employees: 11-50 | Brooklyn, United States | 11-50 | Exact match | 22 contacts → |
“Haiqu is a quantum software company developing a new application execution stack for all modalities of near-term quantum computers.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Entrokey Labsentrokeylabs.com HQ: Mclean, VA, United StatesReported employees: 11-50 | Mclean, VA, United States | 11-50 | Exact match | 19 contacts → |
“Entrokey leverages generative AI to produce quantum-resistant random sequences, ensuring enhanced security against future quantum threats.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Quantum Xchangequantumxc.com HQ: Bethesda, MD, United StatesReported employees: 11-50 | Bethesda, MD, United States | 11-50 | Exact match | 16 contacts → |
“Quantum XChange protects the world’s data in motion from advances in computing and everyday cybersecurity risks.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Garantir Cybersecuritygarantir.io HQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 15 contacts → |
“Garantir is an enterprise cybersecurity company that unifies an organization’s cryptographic operations on a single platform.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Endosec LLCendosec.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 15 contacts → |
“EndoSec LLC specializes in products for hardware intrinsic security and cryptography plus services for security design and AT planning.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Zksecurityzksecurity.xyz HQ: New York, United StatesReported employees: 11-50 | New York, United States | 11-50 | Exact match | 15 contacts → |
“Security audits, development, and research for ZKP, FHE, PQC, and MPC applications, and more generally advanced cryptography.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Secured Quantum Servicessqs.world HQ: Colorado Springs, CO, United StatesReported employees: 11-50 | Colorado Springs, CO, United States | 11-50 | Exact match | 14 contacts → |
“At Secured Quantum Services (SQS), we are at the forefront of building quantum-secure infrastructure for the future.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Enquantaenquanta.com HQ: Eden Prairie, MN, United StatesReported employees: 11-50 | Eden Prairie, MN, United States | 11-50 | Exact match | 13 contacts → |
“The EnQuanta quantum cyber resilience products are software-only integrations that eliminate the need for either custom hardware or networked callbacks.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Stealth Software Technologies, INCstealthsoftwareinc.com HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 12 contacts → |
“Since 2008, Stealth Software Technologies Inc.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Xsoc Corpxsoccorp.com HQ: Irvine, CA, United StatesReported employees: 11-50 | Irvine, CA, United States | 11-50 | Exact match | 12 contacts → |
“XSOC CORP is at the forefront of cyber-resilient solutions, delivering quantum-resistant, next-generation encryption technologies that safeguard critical data across both…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Fortifyiqfortifyiq.com HQ: Salem, MA, United StatesReported employees: 11-50 | Salem, MA, United States | 11-50 | Exact match | 11 contacts → |
“FortifyIQ cryptographic implementations deliver high-assurance side-channel and fault-injection resistance with minimal overhead compared to conventional implementations…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | KLOCHkloch.com HQ: Lakeland, FL, United StatesReported employees: 51-200 | Lakeland, FL, United States | 51-200 | Exact match | 10 contacts → |
“To secure our most vulnerable critical infrastructures, we at Kloch provide innovative encryption solutions to safeguard operational technology (OT) systems with unmatched…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Patero INCpatero.io HQ: College Park, MD, United StatesReported employees: 1-10 | College Park, MD, United States | 1-10 | Exact match | 10 contacts → |
“The US government has mandated that agencies and enterprises responsible for critical infrastructure upgrade cryptography to protect against current and future quantum-based…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Sentriqssentriqs.com HQ: Savannah, GA, United StatesReported employees: 1-10 | Savannah, GA, United States | 1-10 | Exact match | 8 contacts → |
“With a focus on cutting-edge cryptography and user-centric design, SENTRIQS empowers organizations to protect their most sensitive information into the quantum age.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | qusmart.aiqusmart.ai HQ: Atlanta, GA, United StatesReported employees: 1-10 | Atlanta, GA, United States | 1-10 | Exact match | 8 contacts → |
“The QuSmart GENESIS Governance Agent is an Immutable Agent Governance Orchestrator.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Donoma Softwaredonomasoftware.com HQ: Blacksburg, DC, United StatesReported employees: 11-50 | Blacksburg, DC, United States | 11-50 | Exact match | 7 contacts → |
“At Donoma, we believe that an organization's greatest asset is its intellectual property and collective intelligence of its workforce.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Cipher Core, INCcipher-core.co.jp HQ: Las Vegas, NV, United StatesReported employees: 11-50 | Las Vegas, NV, United States | 11-50 | Exact match | 7 contacts → |
“Our company was established with the goal of overcoming the critical situation of all businesses related to Information Security and Finace.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 118 company matches
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Post-quantum cryptography software companies: dataset insights
October 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
118 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 118 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for post-quantum cryptography software companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many post-quantum cryptography software companies did RevenueBase find based in the United States?
The saved snapshot records 118 matching company records, 923 tracked contacts and 348 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Post-quantum cryptography software companies by geography
Cite this list
RevenueBase Data Team. Top 25 post-quantum cryptography software companies based in the United States. Snapshot: October 20, 2026. https://revenuebase.ai/companies/post-quantum-cryptography-software-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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