Table 1(continued)ToolDescriptionRequirementsTypeInterfaceOperatingsystemPrograminglanguages ReferencesDifferential expression detectionSCDEModels gene-specific expressionas a two-component mixture:a Poisson componentdescribes zero and a negativebinomial describes non-zeromeasurementsRequires un-normalized geneexpression counts (performsinternal correction) andprovides gene-specificposterior probabilities ofdifferential expression(DE) between two biologicalconditions. Tests for DE areperformed on non-zerosPackageCommandlineUnix/Linux,Mac OS,WindowsR[88]powsimRSimulates and evaluatesdifferential expression frombulk and especially single-cellRNA-seq data making itsuitable for a priori andposterior power analyses.Powsim is a flexible tool thatcan not only estimate samplesizes necessary to achieve acertain power but also informsabout the power to detectdifferential expression (DE) ina data set at hand. It can allowthe researcher to distinguishbetween actual discrepanciesand incongruities due to lackof powerNAPackage/moduleCommandlineUnix/Linux,Mac OS,WindowsR[89]340 Yungang Xu and Xiaobo Zhou