Ligess is a self-sovereign Lightning Address and Zap (NIP-57) server: https://github.com/Dolu89/ligess/

To use it you need:
* an always on lightning node (eg. a Raspiblitz)
* a (sub)domain under your control
* a VPS with a public IP address to avoid exposing the location of your node

A 5 minute guide to set up with your own node: https://github.com/openoms/bitcoin-tutorials/blob/master/nostr/ligess.md

H/t @nostrich for adding the Zap support

You can try it by zapping this post ;)