Packages by Russell V. Lenth

emmeans — 1.10.0

Estimated Marginal Means, aka Least-Squares Means

estimability — 1.5

Tools for Assessing Estimability of Linear Predictions

lsmeans — 2.30-0

Least-Squares Means

rsm — 2.10.4

Response-Surface Analysis

unrepx — 1.0-2

Analysis and Graphics for Unreplicated Experiments