Relay.tools is promising (not self hosted though).
The source is open GPLv3, self hosting is possible, just need to write more docs and start packaging.. so much to do 😅
An uncle jim distro would be awsome: "host this and let your friends deploy their own relays"
✔️ Official Linea Airdrop is Live. ✔️ https://telegra.ph/Linea-08-16-4 Claim $TBA.