Any scholar would want to gauge the impact of his work on the scientific and intellectual community. This can be done by ascertaining how many times his work has been cited and utilised by other researchers. This also reflects the quality, authenticity of his work and if it is being used as a basis for any future study. Overall, this evidences the importance of indexing and agencies of indexing. They help organise and track the usage of papers and other forms of publication. Therefore, for every researcher, indexing is imperative either when publishing or reviewing articles. The study intends on reinstating the concept of Indexing and Indexed Journal and their importance in scientific research. The study comprises of six folds- the first fold highlighting the concept and its significance, the second, tracing back the history of indexing. The third fold deals with the prominent indexing agencies. The fourth and fifth fold deal with the parameters of indexing and review methods, respectively. Lastly, the sixth fold is the conclusion of the paper.