Eclair is the direct alternative by Acinq. Phoenixd is based on eclair but abstracts all the complexity away so the user doesn't have to think about channels, liquidity etc...
Discussion
I didn't know there were people (outside Acinq) who run eclair
Apparently it's really good, never tried it though.
It is! 🐶🐾🫡🥷⚡️