singleseqgset is a package for gene set enrichment analysis for single-cell RNAseq data. It uses a simple underlying statistic (variance inflated Wilcoxon rank sum testing) to determine enrichment of gene sets of interest across clusters. Check out the vignette for more information on the implementation.
For more information and the singleseqgset vignette, check out the singleseqgset website https://arc85.github.io/singleseqgset/.