WestellaBusiness Software Tasmania arose out of a restructuring of the long-term business partnership between Graham Legg and Andrew Newland, who together operated Modulo Software since 1995.

When Andrew and Graham originally formed Modulo Software, the core business was to provide quality business software solutions through Attache and Sage 300 (Accpac), as well as software development, database creation and maintenance, all to the local Tasmanian market.

As the years have passed, Andrew developed a number of highly successful Sage 300 add-on products that are sold throughout Australia and the world. In the meantime, Graham built and maintained databases and custom software development for businesses. With what was essentially two separate businesses running within the same company structure, Andrew and Graham made the decision to formally demarcate and separate the ownership of the businesses in order to ensure the continued specialised service provision to clients.

From July 1 2017, Graham commenced operations under the brand of Business Software Tasmania, separating from the Modulo Software brand. Business Software Tasmania continued to provide the same services that Graham has been providing over the years: programming, database design and maintenance. Business Software Tasmania also continues to sell Sage 300, Xero and Employment Hero (formerly Keypay).