measuring ambient spectrum (and eye one share)

Hello, There used to be a bit of free Gretag software called 'Eye One share', which allowed one to measure the ambient light - using an Eye One Pro - and display it's spectrum as a graph (spikes and all!) X-rite no longer seem to offer this. Does anyone know of an alternative (preferably free!) that will run under Mac osx Snow Leopard? Thanks, Rob.