A teaching-focused, browser-only workbench for one-way analysis of variance: load a CSV, choose a factor (2–6 levels) and one or more continuous responses, and read the ANOVA table, the compact-letter-display (CLD) summary from Tukey HSD, and a forest plot of pairwise mean differences. Companion to StatTests, StatRegress, and StatTables — runs entirely client-side, no data leaves the browser.