FBReader is an e-book reader for Linux, Microsoft Windows, Android, and other platforms.

It was originally written for the Sharp Zaurus and currently runs on many other mobile devices, like the Nokia Internet Tablets, as well as desktop computers.

Supported formats include EPUB, FictionBook, HTML, plucker, PalmDoc, zTxt, TCR, CHM, RTF, OEB, mobi without DRM, and plain-text.

[4] Nikolay Pultsin wrote the first FBReader; the tool was released for the Sharp Zaurus in January 2005, a Maemo port was added[by whom?]

FBReader has since had binary packages released for many mobile-device platforms and for most major personal computer operating systems.