Welcome Diamond Connection and OnCommand MIM Fleet Customers!

You are here because Navistar has decided to no longer support the Diamond Connection Solutions and OnCommand Maintenance and Inventory Management software which FleetSoft designed and developed for them.

Navistar has asked FleetSoft, LLC to take over all of the direct management and support for the On Command MIM Software program. We value our long-term relationship with Navistar and welcome this opportunity to deliver first rate support to their fleet users on Navistar's behalf.

Diamond Connection Solutions

An older version of our FleetSoft application, first released in 2002, is no longer supported by FleetSoft. However, FleetSoft has developed a conversion program that will automatically convert all of your existing Diamond Connection Solutions data into our new FleetSoft application. If you are interested in looking further into upgrading along with upgrade pricing, please e-mail our sales team at This email address is being protected from spambots. You need JavaScript enabled to view it. or call us at (800) 980-2555 and mention that you are a previous Diamond Connection Solutions customer. We will be happy to assist you and answer any questions you may have about support or a conversion upgrade.

OnCommand Maintenance and Inventory Management Software User

If you are an On Command MIM, you can upgrade to FleetSoft as well and all of your data will be converted automatically.

We understand that many users of our Fleet Maintenance & Inventory Management software have come to rely on the many features and benefits our software offers. We are proud of our software's longevity and we are committed to supporting you for the long haul, with as-needed maintenance releases, current feature enhancements and major version upgrades.

Who better to continue the development and to fully support you than the folks who have been doing so since 2002!

As much as our fleet customers have had high praise for Diamond Connection Solutions, our latest release of FleetSoft has been getting even higher marks for its ease of use, its additional features and its robust custom reporting capabilities.

Please visit our website for more information on the replacement Standard Software package(s).

Thanks for your continued support and use of our software.


The FleetSoft team