The cellular ceramics are well studied in the perspective of synchronization of pore content, structure and sizes. Cellular ceramics with open cells show different properties than that of closed cells due to their different structure and thus are useful in different applications. Ceramic foams consisting of open-cell cellular materials with a network of voids are called reticulated ceramics and are generally made by replication of a sacrificial foam template. Honeycomb is another class of porous ceramics with a two-dimensional array of polygonal columnar pores. The fabrication protocols and processing parameters play a major role in obtaining porous ceramics with desirable cell structure, cell size, distribution, thickness of struts and thereby they tailor the overall porosity of the end product. The simplest way to achieve relatively low porosity of below 60% is traditionally carried out by partial sintering of low density porous powder compacts.