Insights

Niche Industry Expertise 3SL specializes in requirements management and systems engineering solutions for highly regulated industries such as aerospace, defence, space, automotive, and nuclear, indicating opportunities to target clients within these sectors who require specialized compliance and safety standards.

Growing Software Solutions With an annual revenue range of one to ten million dollars and a focus on technical tools like Cradle, there is potential to expand sales efforts by promoting their requirements management solutions and related consultancy services to mid-sized enterprises seeking digital transformation.

Technology Integration Skills 3SL's extensive experience in integrating various software tools suggests an opportunity to offer complementary integrations or customizations to existing clients in order to enhance their systems engineering workflows.

Market Segment Focus Targeting industries with complex project management needs such as aerospace and nuclear, 3SL can benefit from tailored marketing efforts that emphasize compliance, safety, and engineering excellence—key drivers in these markets.

Competitive Positioning Compared to larger competitors like Jama Software and TFS, 3SL's smaller size offers agility and personalized service, which can be emphasized in sales pitches to appeal to organizations looking for more dedicated and flexible requirements management partners.

3SL Tech Stack

3SL uses 8 technology products and services including Hotjar, Cart Functionality, Google Fonts API, and more. Explore 3SL's tech stack below.

  • Hotjar
    Analytics
  • Cart Functionality
    E-commerce
  • Google Fonts API
    Font Scripts
  • Yoast SEO
    Search Engines
  • HSTS
    Security
  • X-XSS-Protection
    Security
  • Google Tag Manager
    Tag Management
  • MediaElement.js
    Video Players

Media & News

3SL's Email Address Formats

3SL uses at least 1 format(s):
3SL Email FormatsExamplePercentage
First.Last@threesl.comJohn.Doe@threesl.com
47%
Last@threesl.comDoe@threesl.com
3%
First.Last@threesl.comJohn.Doe@threesl.com
47%
Last@threesl.comDoe@threesl.com
3%

Frequently Asked Questions

Where is 3SL's headquarters located?

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3SL's main headquarters is located at Barrow in Furness, England la14 1nb United Kingdom. The company has employees across 3 continents, including EuropeNorth AmericaAsia.

What is 3SL's phone number?

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You can contact 3SL's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is 3SL's stock symbol?

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3SL is a publicly traded company; the company's stock symbol is 3SLL.L.

What is 3SL's official website and social media links?

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3SL's official website is threesl.com and has social profiles on LinkedIn.

What is 3SL's SIC code NAICS code?

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3SL's SIC code is 5734 - Computer and Computer Software Stores NAICS code is 5112 - Software Publishers.

How many employees does 3SL have currently?

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As of February 2026, 3SL has approximately 26 employees across 3 continents, including EuropeNorth AmericaAsia. Key team members include Financial Controller: J. L.Financial Controller: J. M.Office Manager: M. V.. Explore 3SL's employee directory with LeadIQ.

What industry does 3SL belong to?

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3SL operates in the Software Development industry.

What technology does 3SL use?

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3SL's tech stack includes HotjarCart FunctionalityGoogle Fonts APIYoast SEOHSTSX-XSS-ProtectionGoogle Tag ManagerMediaElement.js.

What is 3SL's email format?

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3SL's email format typically follows the pattern of First.Last@threesl.com. Find more 3SL email formats with LeadIQ.

When was 3SL founded?

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3SL was founded in 1987.

3SL

Software DevelopmentEngland, United Kingdom11-50 Employees

Developer of the requirements management and systems engineering tool "Cradle" and the provider of related training and consultancy services.

3SL has extensive experience in the integration of software tools and in the definition, deployment and management of requirements management and systems engineering services. We have specific experience in several industry sectors, including aerospace, defence, space, automotive and nuclear.

Section iconCompany Overview

Headquarters
Barrow in Furness, England la14 1nb United Kingdom
Phone number
SIC Code
5734 - Computer and Computer Software Stores
Stock Symbol
3SLL.L
NAICS Code
5112 - Software Publishers
Founded
1987
Employees
11-50

Section iconMedia & News

Section iconFunding & Financials

  • $1M$10M

    3SL's revenue is estimated to be in the range of $1M$10M

Section iconFunding & Financials

  • $1M$10M

    3SL's revenue is estimated to be in the range of $1M$10M

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