I think this is the category Website Administration and Chat related I and maybe many more server owners out there are searching for an easy to use web chat for their server website. The old WebChat plugin is outdatet an because of the polnish language not easy to configure. Maybe with MySQL as DB System or like the Dynmap Chat with .json files. ExternalChat uses the .json files too but webserver-side and thats a bit too complicated if you have no access to the console of your server. There also can be integration of the already existing user management systems on the websites. Very grateful, Houston9000.
Use IRC. It is far simpler and a lot more lightweight than you might think, also compared to making a plugin with everything depending on itself.