Insights

Specialized Industry Focus 3SL's expertise in requirements management and systems engineering across sectors such as aerospace, defense, space, automotive, and nuclear positions it as a key supplier for organizations seeking tailored solutions within highly regulated and complex industries.

Growth Potential With a revenue range of up to 10 million dollars and a relatively small team, 3SL shows scalability opportunities; partnering to expand their customer base or enhance product offerings could unlock significant revenue growth.

Technology Integration Utilizing a modern tech stack including SEO tools, security protocols, and user engagement analytics, 3SL demonstrates an openness to leveraging technology for improving product delivery and customer engagement, offering a chance for technology partners to add value.

Market Expansion Opportunities The company's presence in the UK and experience across multiple high-tech industries suggest potential for international expansion, especially into markets with similar regulatory environments and demand for requirements management solutions.

Competitive Positioning Compared to larger competitors like Jama Software and TFS, 3SL’s niche focus and targeted services create opportunities for personalized sales approaches and tailored consulting services to meet the specific needs of their industry sectors.

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
94%
Last@threesl.comDoe@threesl.com
6%

Frequently Asked Questions

Where is 3SL's headquarters located?

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3SL's main headquarters is located at Howard Street Barrow in Furness, England United Kingdom. The company has employees across 2 continents, including EuropeNorth America.

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 NAICS code?

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3SL's NAICS code is 5112 - Software Publishers.

How many employees does 3SL have currently?

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As of April 2026, 3SL has approximately 26 employees across 2 continents, including EuropeNorth America. 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
Howard Street Barrow in Furness, England United Kingdom
Phone number
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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