They never really went away. A web remake of LORD, Legend of the Green Dragon (LoGD), has at least 4000 monthly active users currently: https://github.com/lotgd/census

That census also contains some of the more popular servers you might play LoGD on. However, even LoGD is getting a bit old and development stopped a few years ago. There are two modern forks being worked on that I am aware of. The first gets rid of backward compatibility and is more ambitious: https://github.com/lotgd/core

The second is backwards compatible and allows all the many modules developed for LoGD to be used: https://github.com/stephenKise/Legend-of-the-Green-Dragon