Dublin-based company Calyx is planning to raise around €10m by listing on London's AIM market.
The company provides information and communication networks to a number of customers, including the Revenue, Government departments and financial institutions.
For 2004, Calyx had revenues of €32.4m and earnings before interest, tax, depreciation and amortisation of €3.5m.
Calyx says it will use the proceeds of the flotation to invest in technical, sales and marketing infrastructure, and to acquire additional products and businesses.
CEO Maurice Healy led a management buyout of the company from Alphyra in 2002.
