An interesting Electrum server is also Fulcrum which has been discussed in some other thread(s) here on this forum, e.g. here https://bitcointalk.org/index.php?topic=5441463 and also compared with other Electrum server implementations e.g. here https://www.sparrowwallet.com/docs/server-performance.html.

I use Fulcrum on my RaspiBlitz node as replacement for electrs because I got tired of the issues that electrs has sometimes with addresses that have a huge transaction history. For my personal Electrum wallets I don't need Fulcrum, electrs would be fine. When I do sometimes a bit of blockchain digging I've run into such issues from time to time with electrs. Fulcrum is easier to configure to server huge address histories and it's refreshingly fast with data retrieval compared to electrs.

Linux and Windows executables are available from the Github, MacOS executables are announced but not yet there. You can always check the code and compile your executable yourself. I don't mind that the main dev appears to be in the BCH camp, the project is open-source and works very well for Bitcoin.