STRidER is online high-quality STR allele frequency population database. Enables scientifically reliable STR genotype probability estimates. Provides quality control of autosomal STR data. Software tools scrutinize STR population data. Increases quality of datasets for reliable allele frequency estimates. STRidER acts as frequency database and software platform. Supports novel tools for STR data QC and forensic analyses. Serves STR community in forensics and beyond. Outlined in ISFG DNA Commission recommendations. Platform is growing with additional datasets and features. Register for STRidER newsletter for updates.