Bioinformatics Systems Tantigen an online a data source and analysis platform for cancer vaccine target discovery focusing on human tumor antigens that contain HLA ligands and T cell epitopes. HPVdB an online data source and analysis platform for Human Papillomavirus immune target discovery by focusing on HPV antigens that contain HLA ligands and T cell epitopes. EBVdB an online data source and analysis platform for Epstein-Barr virus immune target discovery by focusing on EBV antigens that contain HLA ligands and T cell epitopes. Dana-Farber Repository for Machine Learning in Immunology a data repository that bridges the gap between immunological and computer science/machine learning communities by providing preprocessed and scaled immunological data sets suitable for use in machine learning applications. MULTIPRED2 a system for large-scale screening of allele-, genotype-, and supertype-specific HLA associated peptides. PREDBALB/c a computational system that predicts peptides binding to the major histocompatibility complex-2 (H2d) of the BALB/c mouse, an important laboratory model organism. PREDmus an online system for the prediction of peptides binding to MHC alleles of several commonly used laboratory mice. PRED BL/6 an online system for the prediction of peptide binding and stability to C57BL/6 mouse MHC Class I molecules (Dᵇ/Kᵇ) in silico.