Altitude Software, the Portuguese-based systems developer, has said that it plans to list on Euronext, at the same time as its home stock market is embedded in deep discussions to join the merged entity of the Paris, Amsterdam and Brussels exchanges.

Altitude Software, which has offices in Europe in France and the UK, could raise as much as €190m ($156m) from its initial public offering and listing on the Euronext exchange, which was formed last month.