Speeduino is growing all the time and new features are added regularly.

Here's some of the main ones though

Support for 1-8 cylinder engines

Fully interpolated 16x16 Maps

Open and closed loop boost control

Extensive list of supported crank patterns

Detailed and high speed logging

VE Analyze Live ('Autotune')

Secondary map switching

Individual fuel cylinder trim

Over dwell and over duty protection

Launch control

Free calibration of all sensors

Flex fuel support