Calibre UK, a privately owned company headquartered in the UK, was founded in 1988 and employs approximately 20 individuals, operating in Information Technology & Services. The company specializes in manufacturing electronics display equipment, with its product portfolio including broadcast format converters, seamless scaler-switchers, presentation scaler-switchers, LED screen scalers, digital cinema scalers, industrial signal conversion solutions, TFT LCD displays, LCD driverboards, specialty displays, and OEM designs.
On February 20, 2026, Calibre released version 9.3, the third maintenance update in its 9.x series. This release, developed by Kovid Goyal, improved support for the Hanvon N10 e-reader by fixing a driver bug that previously prevented the application from placing metadata files onto the device. The update also enhanced the Windows installer to detect active Calibre processes, prompting users to close them before installation and thereby reducing the need for a system reboot. Calibre functions as an open-source e-book library management application, allowing users to manage collections, convert formats, synchronize with e-book reader devices, and read e-books via its integrated viewer. Previously, on February 6, 2026, Calibre 9.2 launched as the second update to the 9.0 series, improving ZIP output by enabling changes to the HTML templating engine from Templite to Mustache for enhanced safety and performance, and introducing an option to rebuild the annotations search index within library features. This followed the initial release of Calibre 9 on February 2, 2026, which featured a new library view and numerous under-the-hood improvements.
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