Is there a way to list all currently installed plugins?

I don't think there is a command for that at the moment. I've always wondered why this is not a feature. I think one of the main blockers is probably to finalise the naming of those things that we currently call "plugins" ... https://github.com/meltano/meltano/discussions/6561

I did find open issue https://github.com/meltano/meltano/issues/2095 for this

Good find! This comment captures my use case nicely: https://gitlab.com/meltano/meltano/-/issues/2139#note_838714582

Thanks for resurrecting this issue! I definitely want to have this as we start to work on cloud (note: it would definitely be a meltano core feature) but you’re not the only one who’s been asking about this!

A large meltano project I work on has dozens of plugins. Even myself who knows the project well, cannot remember the names of all the plugins in that project. I imagine it would be even worse if a new engineer was to try and start familiarising themselves with such a large project.

Meltano install, ls .meltano/extractors .meltano/loaders . meltano/transformers etc If you really need it right now I think that works :)