A stripped down custom ROM based on AOSP designed for maximum performance and power efficiency.
Ranked in these QuestionsQuestion Ranking
Pro RRO Layers Support
RRO Layers is a theming engine which allows you the capability to theme your ROM with little effort. Supported only in Lollipop.
Con Only a handful of devices are supported
SlimLP supports several devices but nowhere near as many as other vanilla options such as CyanogenMod.