According to the official Discord, “ACX has made the decision to close Booklore and step away.” Some contributors are working together on an unnamed replacement project.
For those not in the loop, Booklore was an app that for selfhosting book libraries. It had a nice UI. It was able to store metadata separately from the download files, so you could have an organized library without duplication. In recent weeks, there have been conflict about AI code, licensing, and general Discord nastiness.
RIP
That is only part of it. He also wanted to release a paid for client and was making it more difficult for the Foss clients to connect. He also wanted to change the license which would be hard considering others have contributed.