MB is a free multi-functional DNA/protein analysis program. It's main advantage is that it combines all of the most widely used features needed for an advanced molecular analysis of genomic/proteomic data. Features of MB include a fast restriction analysis algorithm (included plasmid / linear DNA drawing), promoter analysis, calculation of molecular weights and chemical properties of proteins, prediction of the secondary protein structures (after Chou-Fasman). Protein analysis also includes sequence translation and codon usage table calculation.

Other features: hierarchical multiple sequence alignment tool (with a feature to compare secondary structure of proteins), phylogenetic tree building, dot plot, estimation of isoelectric point for proteins, primer design. A tool for the structural analysis of alpha helices is also included in the main package.