Hey, guys. I need something similar to prefixes on a forum, the tag systems would fit well if I could limit the number of tags in each post... and which tags the users would be able to use (we can do it on IP.Board).
@pawan-patil You are able to modify the source code and use it on your own site. You are only limited if you are intending to redistribute the code. If you intend to, then you must also open-source your changed code.
If in doubt, you'll want to contact a lawyer to review the GPLv3 license that comes with NodeBB.