A biofilm is a well organized cooperating community of organisms. Biofilm it is a surface based microbial cells. Biofilms are composed primarily of microbial cells and EPS(Extracellular Polymeric Substance). The category microorganisms majorly involved in cell communication and signalling and hence biofilm formation are reviewed in this paper. The major types of microorganisms majorly assisting in biofilm formation such as Pseudomonas aeruginosa, Candida albicans, Staphylococci sp are being discussed. The features of biofilm producing organisms were also reviewed in this paper.