Packages by Russell V. Lenth

emmeans — 1.11.0

Estimated Marginal Means, aka Least-Squares Means

estimability — 1.5.1

Tools for Assessing Estimability of Linear Predictions

lsmeans — 2.30-2

Least-Squares Means

rsm — 2.10.6

Response-Surface Analysis

unrepx — 1.0-2

Analysis and Graphics for Unreplicated Experiments