Welcome to 3SL

For a complete Model Based Systems Engineering Toolsuite, specialising in requirements management, requirements capture, model based systems engineering and for systems engineering software, support and consultancy, the logical choice: Cradle from 3SL.

The premier model based systems engineering environment. We are market leaders in delivering the premiere full lifecycle systems engineering environment Cradle.

Our powerful requirements management and model based systems engineering tools deliver outstanding improvements in interoperability, management and cost savings. Deliver outstanding improvements in your requirements management and systems engineering projects now.

Customer Quote:

"I did all of my work in WorkBench.... I did a complete project setup from scratch because I wanted to see if Cradle could actually support the most popular RUP configurations I've implemented with Rational... and what's so impressive is that Cradle did everything that ReqPro and ClearQuest (the two most popular Rational tools); but Cradle lets you do everything without moving between two different applications. And, Cradle is FAR more customizable than Rational's two popular tools.

Cradle gives project team members the option of having a paperless environment, as well. For example, I typically create a Use Case spec in paper because ReqPro didn't support the creation of forms and the table I'd add to the paper spec had a number of fields that display data. I created this same table, I create on paper, in Cradle and was able to enter and view the data without any problems. This means I could do the same thing with a Change Request Form, QA Audit Forms, Defect tracking forms, etc. and this means the entire team can all use the same tool (Cradle) to manage their portion of the project. And, although Cradle can support a complex project structure you can turn around and use that same tool to create a really simple project structure for teams..."
Pamela Langford.

"3SL is pleased to announce that Cradle has been selected by the NASA Exploration Systems Mission Directorate (ESMD) as the requirements management (RM) and systems engineering (SE) tool of choice for the Integrated Collaborative Environment (ICE). ICE is being deployed across all NASA centres to integrate all activities for all ESMD programmes. In particular, this means that Cradle is now the RM and SE tool of choice for the Constellation programme. Constellation is the largest programme that NASA has undertaken, and will result in Man's return to the Moon within the next decade and Man's first mission to Mars thereafter. 3SL is honoured to have this opportunity to serve in a small way in one of the milestone activities of the 21st century."