Django Music Publisher (DMP) is open-source software for managing music metadata,
batch registration of musical works (using CWR) and royalty processing.
Documentation: Introduction

It was initially released in July 2018 and has been regularly upgraded ever since.
The current version, 21.5 Mayday, was released in May 2021.
Documentation: Release History

Installation takes under 5 minutes and requires no technical skills.
Documentation: Installation
Installation wizard

Community support is available through a Facebook group and code repository.
Facebook Group
Code Repository

It comes with a great user manual and many video tutorials.

User ManualVideo tutorials

Django Music Publisher is free. MIT License
No registration, no payment data, no BS.

Install

How can it be free?

Read here

Beyond DMP

That Green Thing