There are 3 repositories under openpgp-keyserver topic.
PHP proxy and extensible web interface forwarding standard HKP requests to a local or remote SKS OpenPGP Keyserver.
This project is a lightweight static front-end website for a sks keyserver.
Java client library for communicating with a HKP (OpenPGP HTTP Keyserver Protocol) Server.
OpenPGP keys filterlists maintained by CIRCL
Lightweight OpenPGP key server (HKP). Works on Cloudflare Workers
OpenPGPJS implementation for NativeScript