The DeforaOS project was recently submitted to Ohloh [1], a network of Open Source projects. There [2], you will find statistics about the source code and the development activity in particular.

An interesting first result of the project analysis is that sadly, the development has slowed down during the last year [3]. However, the pace has remained pretty linear over the years [4], which also reassures me.

[1] https://www.ohloh.net/
[2] https://www.ohloh.net/p/DeforaOS
[3] https://www.ohloh.net/p/DeforaOS/factoids/1880460
[4] https://www.ohloh.net/p/DeforaOS/analyses/latest