Calibre 9.9 is now available (download here), and while this release will not generate the same kind of hype as some AI-infused app pretending to reinvent reading, it does bring a bunch of genuinely useful improvements for folks that actually manage large e-book libraries.
For Linux users, one of the biggest fixes is aimed directly at Fedora 44. The update resolves an SSL certificate loading problem that could interfere with secure connections. If you were scratching your head wondering why certain online features suddenly stopped behaving properly on Fedora 44, this release should help.
The open-source e-book management software also improves page counting for fixed layout EPUB files. That may sound minor, but if you deal with comics, textbooks, magazines, manuals, or visually rich EPUBs, accurate page numbers matter more than you might think.
Another practical addition is a new option that keeps your current search active while switching Virtual libraries. People with massive Calibre collections know how annoying it can be to constantly re-enter searches while jumping between libraries, so this change should make organization a bit less tedious.
The E-book viewer gets some love too. Calibre 9.9 fixes incorrect search offsets when text contains non-BMP Unicode characters. Meanwhile, the content server now applies null metadata correctly when serving book files, matching the behavior seen when saving books to disk.
Metadata editing also gets cleaned up a bit. The bulk metadata dialog now properly supports the backspace key in number fields set to Undefined, while the Add from ISBN feature no longer gets confused by stray spaces around colons in identifiers.
As usual, the release refreshes several built-in news sources. Updates were made to feeds including BBC, Associated Press, Washington Post, TIME Magazine, ProPublica, VOX, Chicago Tribune, Business Standard, The New Yorker, and others. New Hungarian and Czech news sources were added too, alongside Brazil’s SuperInteressante.
What continues to make Calibre refreshing is that it still feels like software built for people that want ownership and control over their media. It does not try to trap users in a subscription ecosystem or force everything into the cloud. In 2026, that alone almost feels rebellious.
