I haven't seen popping anywhere a tool for Five Rings like OggDude's GM Tools and character generator for the Star Wars RPGs. So because I needed a way to give me a few more weeks to thing about my campaign and excuse that time before the campaigned start, I made one.
It's not as in-depth as OggDude's tools, but it can make NPCs relatively fast and apply templates on existing character without effort.
Link to the github: https://github.com/polepage/L5R_NPCTool the readme hold information both for people that only want to use it (including a link to download the application) and for people that may wish to contribute and enhance the application. It currently only runs on Windows.