Is a hard-fork that happened after the Audacity's corporate, astroturf, and anti-user shift.

This is a direct quote of their Codeberg repo:

Motivation

Our project initially started as a fork of Audacity as a result of multiple controversies and public relation crises, which you can find out more about here:

• Privacy policy which may violate the original project's GPL license
• Contributor's License Agreement (CLA) which may violate the same GPL license
• Attempts at adding telemetry using Google services for data collection

Nevertheless, the goal of this project is to pick up the decades-long work by the original developers of Audacity and create an audio editor that is fresh, more modern, convenient and practical to use, with the help and the guidance of our users and our community.

Differences from Audacity

Tenacity is not merely an Audacity fork that removes error reporting and update checking, although it might seem like it. We have been hard at work implementing our own features and fixes and want to take Tenacity in a direction our users and community like. So far, we have fulfilled part of this endless goal by implementing the following:

• New, modern themes.
• Improved support for more platforms such as Haiku.
• Matroska importing and exporting without needing FFmpeg.
• Support for importing, editing, exporting Matroska chapters as label tracks.
• Sync-lock improvements, including the ability to temporarily override sync-lock.
• Horizontal scrolling in the Frequency Analysis window.
• Under-the-hood changes, such as a revamped build system allowing for modern upstream dependencies.

More changes are yet to come, big or small. We are always welcoming contributions to Tenacity, no matter how big or small, feature or fix. For more info, see the Contributing section.