Invited review abstract

Estimates of the substellar IMF have now been derived for a number of young open clusters (30-600 Myr) down to 20-30 Jupiter masses and for various star forming regions (1-5 Myr) down to a few Jupiter masses. We will review recent results regarding the shape of the substellar IMF and its sensitivity (or lackof) to environmental conditions, and discuss its temporal evolution in populated clusters.