PDNS Manager is a simple yet powerful free administration tool for the Powerdns authoritative nameserver. It supports master and native zones. PNDS Manager was developed from scratch to achieve a user-friendly and pretty looking interface. PDNS Manager also features a powerful API to set records programatically. This can be used e.g. for a dynamic DNS service, but also to obtain certificates from Let's Encrypt via the dns-01 challenge. PDNS Manager is written in PHP using Bootstrap and jQuery. The backend uses a MySQL/Maria DB or Postgres database. The database is also used by Powerdns using the pdns-backend-mysql or pdns-backend-pgsql backend.
You can find more information and documentation as well as contact information on pdnsmanager.lmitsystems.de. There are also some tutorials to get you quickly up and running.
If you are looking for a new feature or you found a bug, feel free to create a pull request or open a issue.