The folder contains the zip of LabView program Spectral_Browser v3.58 along with the necessary installation guide and an example data. The analysis software was used to analyse the MS data for the paper: "Amino acids catalyse RNA formation under ambient alkaline conditions" by Saroj Rout, Sreekar Wunnava, Miroslav Krepl, Giuseppe Cassone, Judit Šponer, Christof Mast, Matthew Powner, Dieter Braun. Nature Communications (under revision) Preprint is available on research square at doi.org/10.21203/rs.3.rs-4343389/v1