If you are looking for a company that can provide you with a fully flexible, highly configurable feature rich CRM, Membership, Events and Sales Management application suite AND all the services to deliver that solution in your organisation, including project leadership, implementation consultancy, training and software development all for a fixed price then you are in the right place.

3Si are a privately owned and privately funded company, and we specialise in providing services and solutions to the not-for-profit sector which our  company owner directors have successfully been doing so since the launch of the original Open Market product suite in 1993.

Our CRM software solution OM.Net is owned and developed by us and was one of the first “from the ground up” developed .Net framework application suite incorporating Web and Desktop interfaces to a fully scalable application server.

With year on year growth 3Si and the OM.Net application continues to be the success story of the sector with a significant number of not-for-profit clients, including Trade Associations, Professional Associations, and Leisure Associations selecting it as their CRM software solution of choice. 

Our success and growth has been due to our strong commitment in customer service and investment in staff together with excellent business relationships with specialist solution providers such as Microsoft, Postcode Anywhere, SagePay and Bottomline Technologies.

As a long standing Microsoft Solution Partner, we have established a reputation for total service.  Our extensive product portfolio provides solutions for all aspects of our clients’ needs including Web Enablement and Back office systems for Customer Relationship Management, Membership, Events, Committees, CPD, Product Sales and much more.

We are proud to be a UK based company who does not employ 3rd parties or contractors to complete any part of our projects.  All work completed by us is done so by 3Si employed members of staff based at our Head Office in North Staffordshire.