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STunnel

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Stunnel is a proxy designed to add TLS encryption functionality to existing clients and servers without any changes in the programs' code.

Other Security
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Market Share of STunnel

Current Customer(s)

84

Market Share (Est.)

0.10%

Ranking

#15

Top Competitors and Alternatives of STunnel

The top three of STunnel’s competitors in the Other Security category are Termly with 56.86%, Cookie Script with 30.25%, Microsoft Azure AD MFA with 3.09% market share.

TechnologyDomainsMarket Share (Est.)Versus page
Termly4944956.86%STunnel vs Termly
Cookie Script2630530.25%STunnel vs Cookie Script
Microsoft Azure AD MFA26863.09%STunnel vs Microsoft Azure AD MFA
Microsoft Graph24332.80%STunnel vs Microsoft Graph
McAfee SECURE15991.84%STunnel vs McAfee SECURE
Aruba ClearPass8340.96%STunnel vs Aruba ClearPass
Snyk7480.86%STunnel vs Snyk
Resolve Systems4710.54%STunnel vs Resolve Systems
ServiceNow Security Operations4450.51%STunnel vs ServiceNow Security Operations
BitSight2400.28%STunnel vs BitSight
FireEye Network Security2160.25%STunnel vs FireEye Network Security
Qualys Cloud Platform2120.24%STunnel vs Qualys Cloud Platform
Syniverse1530.18%STunnel vs Syniverse
Junos Space Security Director970.11%STunnel vs Junos Space Security Director
Sonitrol840.10%STunnel vs Sonitrol
Faronics Deep Freeze810.09%STunnel vs Faronics Deep Freeze
Fireblocks740.09%STunnel vs Fireblocks
McAfee Foundstone730.08%STunnel vs McAfee Foundstone
Feitian Technologies670.08%STunnel vs Feitian Technologies
Stellar Phoenix Mac Data Recovery650.07%STunnel vs Stellar Phoenix Mac Data Recovery
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Popular Comparisons

Top Competitors and Alternatives of STunnel

The top three of STunnel’s competitors in the Other Security category are Termly with 56.86%, Cookie Script with 30.25%, Microsoft Azure AD MFA with 3.09% market share.

STunnel vs Termly

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STunnel vs Cookie Script

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STunnel vs Microsoft Azure AD MFA

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STunnel vs Microsoft Graph

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STunnel vs McAfee SECURE

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STunnel vs Aruba ClearPass

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STunnel vs Snyk

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STunnel vs Resolve Systems

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Customers of STunnel

Around the world in 2025, over 84 companies have started using STunnel as Other Security tool.

CustomersEmployee RangeCityRegionCountrySocial Links
Asana1,000 - 4,999San FranciscoCaliforniaUnited States
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Student Shelter In Computers250 - 499Andhra PradeshIndia
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Nanit100 - 249New York CityNew YorkUnited States
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Soren Blog100 - 249ChicagoIllinoisUnited States
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wolfSSL100 - 249EdmondsWashingtonUnited States
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W4rri0r20 - 49RichardsonTexasUnited States
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SecuriteInfo.com0 - 9NozayIle-de-FranceFrance
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Firewall Consultants0 - 9SeattleWashingtonUnited States
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Verification Labs, LLC0 - 9SeattleWashingtonUnited States
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MemCachier0 - 9San FranciscoCaliforniaUnited States
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STunnel Customers by Products and Services

The top three products and services offering customers that use STunnel for Other Security are Software Development (8), Cloud Services (4), Higher Education (4).

Customers

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STunnel Customers by Employee Size

The majority of STunnel's customers for the other-security category fall in the company size of 10,000+ employees (25 companies), 100 - 249 employees (15 companies), 0 - 9 employees (14 companies).

Employee Size

STunnel Customers by Geography

The top three geographies of STunnel for other-security are the United States with 46(60.53%), United Kingdom with 9(11.84%), India with 8(10.53%) customers respectively.

Customers

Employees of STunnel

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Also see other Products/Services by STunnel in:

Other Security

FAQ

Find answers to the most often asked questions by users.

Who are the top STunnel competitors?

STunnel’s Top competitors in the other-security category are Termly, Cookie Script, Microsoft Azure AD MFA. You can view a full list of STunnel competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of STunnel and 40,000 other technologies on the internet. You can also compare STunnel and its feature with top competitors here : STunnel vs Termly STunnel vs Cookie Script STunnel vs Microsoft Azure AD MFA.

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What is STunnel customer distribution based on company size?

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What is STunnel market share in the other-security?

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What are the top countries that use STunnel?

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What are the top industries that use STunnel?

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