E-Book Utilities: Add Komikku (#764)

README.md

@@ -564,6 +564,7 @@ _For a more comprehensive/advanced/better categorized/... list of Linux audio so
 - [Foxit](https://www.foxitsoftware.com/pdf-reader/) - Foxit Reader 8.0—Award-winning PDF Reader.
 - [![Open-Source Software][oss icon]](https://github.com/martahilmar/gnome-books) [GNOME Books](https://github.com/martahilmar/gnome-books) - GNOME Books is application for listing, searching and reading eBooks.
 - [![Open-Source Software][oss icon]](https://www.willus.com/k2pdfopt/src) [K2pdfopt](https://www.willus.com/k2pdfopt) - K2pdfopt optimizes PDF/DJVU files for mobile e-readers (e.g. the Kindle) and smartphones.
+- [![Open-Source Software][oss icon]](https://codeberg.org/valos/Komikku) [Komikku](https://apps.gnome.org/Komikku/) - Manga reader with support for online and offline reading, automatic downloads, locally stored manga formats (CBZ and CBR formats), and collection organization features.
 - [Lucidor](https://www.lucidor.org/lucidor/) - Lucidor is a computer program for reading and handling e-books. Lucidor supports e-books in the EPUB file format, and catalogs in the OPDS format.
 - [MasterPDF editor](https://code-industry.net/free-pdf-editor/) - Master PDF Editor a convenient and smart PDF editor for Linux.
 - [![Open-Source Software][oss icon]](https://sourceforge.net/p/mcomix/git/ci/master/tree/) [Mcomix](https://sourceforge.net/projects/mcomix/) - GTK+ comic book viewer.