The human life is simple as well as quite intrigued and it always tries to find solutions to unending problems and challenges. We know that the need is the mother of invention and the scientists in the world are saints of modern age, as based on their tireless efforts the humans have made a significant progress in various fields as telecommunications, information technology, space technology, infrastructures, food technology through green revolution, life-saving drugs, etc. All these fields need chemicals, which must be manufactured at commercial scales. However, the old technologies are handicapped with unlimited limitations for commercial production of these much needed chemicals. As an old man needs help to cross the road, such limitations in the commercial productions of these chemicals are overcome with co-operative effects of other additives as promoters of reaction rates, which in turn help produce the desired products in quantitative yields. Isn’t it interesting to find out what kind of these promoters are, as they have been identified and successfully used through a long journey of innovative, cost-effective process developments with excellent yields and purities of the targeted molecules, which find number of applications in human life. New technologies with above attributes are the essence of this book entitled as “Aniline and its Analogs”, which covers the old and new methods and technologies of their preparations and manufacturing till date, which is compiled by a versatile and an accomplished scientist.