The industry appropiate value calculator which allows you to play around with scenarios and ROI terms. Even the option to add on your own initiative/KPIs calculations. Review collected by and hosted on G2.com.
Information and ratios are mostly if not solely based on USA firms so the "power of one" KPIs seldom reflect any benefit for customers or firms in other geos. The EPS information is always empty, they should be able to link it to a web service or something to have the amount of stock being traded.
Definitions about the portions in the ROI calculator are a bit confusing, it takes a while to understand how the percentages are applied. That is the most "difficult" part to understand and hence to explain. Review collected by and hosted on G2.com.
