Local AI for document search — Informity AI, runs entirely on-device

You’re in luck — EPUB support just landed in v0.9.9. You can grab it at https://www.informity.ai (Apple Silicon).

On Linux: I actually built a .deb package for Debian/Ubuntu, but I only have my MacBook Pro M so I can only build for arm64 right now. To support x86_64 I’d need access to an Intel machine to build and test on. Working on it.