For avid readers and librarians, Calibre is a one-stop solution for managing e-book collections. It is a free and open-source e-book management software that supports a wide range of formats, including CBZ, CBR, CBC, CHM, EPUB, FB2, HTML, LIT, LRF, MOBI, ODT, PDF, PRC, PDB, PML, RB, RTF, TCR, and TX
