Tool for the analysis Mass Spectrometry (MS) data in the context of immunopeptidomic analysis for the identification of hybrid peptides based on the workflow published by Faridi et al. in 2018 <doi:10.1126/sciimmunol.aar3947>. and the predictions of binding affinity of all peptides using 'netMHCpan' <doi:10.1093/nar/gkaa379> while providing a summary of the netMHCpan output. 'RHybridFinder' (RHF) is destined for researchers who are looking to analyze their MS data for the purpose of identification of potential spliced peptides. This package, developed mainly in base R.