harmon.ie was previously called Mainsoft. The company has been delivering, cross-platform enterprise solutions since 1993. Since its inception, the company has generated over $120M of revenues through OEM relationships with some of the largest software vendors including Oracle Siebel, SAP Business Objects, IBM Rational, IBM Cognos, Mentor Graphics, Cadence Design and ESRI.

Tapping its cross-platform expertise, in June 2008, harmon.ie launched its first enterprise collaboration product, SharePoint Integrator for Lotus Notes. For the first time ever, the Lotus and Microsoft collaboration stacks could work together seamlessly. After successful adoption by hundreds of enterprise customers, the collaboration suite was extended to include Microsoft Outlook and Google Docs, with its premiere launch of the harmon.ie product line in March 2010. In addition to making SharePoint available to the typical business user from Lotus Notes or Microsoft Outlook, harmon.ie could now also provide access to the Google cloud from the familiar Outlook client. Today, continuing its cross-platform heritage, the company lets enterprises pick and choose collaboration offerings from a variety of platform vendors such as Google, Microsoft and Lotus; in all cases, business users attain an integrated user experience.

In November 2010, the company released harmon.ie Enterprise Edition, introducing 'social email' to drive enterprise collaboration and SharePoint adoption from both Microsoft Outlook and Lotus Notes.

In August 2011, the company introduced 'social documents' which bring together the dimension of document collaboration with enterprise social interactions, such as activity streams. The result; the ability to follow documents as they develop during projects, and reach out to project team members via chat, voice, and video from the context of editing the document. All within one window / single context.