They all run cyanogenmod.
The older wileyfox swift : http://www.wileyfox.com/swift-160.html
Updated version: http://www.wileyfox.com/swift-169.html
Swift 2+
http://www.wileyfox.com/swift2.html
Spark:
http://www.wileyfox.com/spark.html
Spark plus
http://www.wileyfox.com/sparkplus.html
Spark x
http://www.wileyfox.com/sparkx.html
