Norikra is a open source software product to do very complex calculation in extremely simple way. Norikra handles "streams" of data.
This is the first open source software in a category named as CEP (Complex Event Processing). The main features of Norikra are simple query language for complex processing, easy bootstrapping and freedom (open source, GPL).
There are quote from http://norikra.github.io/ :
What 'Norikra' means?:
Japanese famous mountains, which has great winding roads like dynamic data streams