Abstract: The present invention relates to the manufacture of a new class of hybrid aerogels with a 3-D reticulated structure. First, the organic and inorganic components of the structure are distributed on a molecular level in such a way that all of the organic components of the precursor are chemically bonded to each other and to the inorganic component. Second, in the new hybrid aerogels, the pores are separated by solid walls like reticulated open-cell foams without the particulate solid parts and also the present invention is a process for preparing a hybrid aerogel without aging step having a nonparticulate-reticulated structure comprises of a polymeric precursor that is crosslinked by a linkage without forming particulate structure.