Calibre (software)
| Calibre | |
|---|---|
Calibre 6.3 in Linux | |
| Original author | Kovid Goyal |
| Initial release | 31 October 2006 |
| Stable release | 9.5.0
/ 13 March 2026 |
| Written in | Python, C++, C |
| Operating system | Windows, macOS, Linux |
| Platform | IA-32, x64 |
| Type | E-book reader, word processor |
| License | GPL-3.0-only |
| Website | calibre-ebook |
| Repository | |
Calibre (/ˈkælɪbər/ KAL-ih-bər) is a cross-platform free and open-source suite of e-book software. Calibre supports organizing existing e-books into virtual libraries, displaying, editing, creating and converting e-books, as well as syncing e-books with a variety of e-readers. The editing of books is supported for EPUB and AZW3 formats. Books in other formats like MOBI must first be converted to those formats, if they are to be edited. Calibre also has a large collection of community contributed plugins.