DtBMS is a software that I made long time ago.
It parses a BMS file and generates a preview of the notechart in PNG format. Later, OJN file support is added.
It’s currently available online but I realized that there are many missing features and bugs. So I think that I will release the source of this.
Because it was made long time ago, the code looks… well… ugly.
Anyway, here is it: the source code of my BMS / OJN parser
And I really hope that someone can pick this up and make it work better. If you have done something with this (improving it, or just hosting it on another server), then feel free to let me know (comment here or contact by email).