|Biopolymers are chain-like molecules made up of repeating chemical monomers and could be very long in length. The prefix bio means that they are produced by living organisms and are biodegradable. Biopolymers are classified in three main groups, depending on the nature of the repeating unit they are made of: (i) polysaccharrides are made of sugars, (ii) proteins of amino acids, and (iii) nucleic acids of nucleotides. The top open access journals are peer reviewed scholarly journals of Biopolymers. The top open access journals are freely available on the public internet domain, allowing any end users to read, download, copy, distribute, prink, search or link to the full texts of the articles. These provide high quality, meticulously reviewed and rapid publication, to cater the insistent need of scientific community. These journals are indexed with all their citations noted. The top open access journals are indexed in MEDLINE, PUBMED, SCOPUS, COPERNICUS, CAS, EBSCO and ISI.