The Simple Function Point method
The Simple Function Point (SFP) method is a lightweight Functional Measurement Method. The Simple Function Point method was designed by Roberto Meli in 2010 to be compliant with the ISO14143-1 standard and compatible with the International Function Points User Group (IFPUG) Function Point Analysis (FPA) method.
Source: Wikipedia — The Simple Function Point method (CC BY-SA 4.0)