Calibre

“I use Calibre to manage my e-books, installing them to and removing them from my Nook e-Readers.”
Junio C Hamano Interview, Developer (git) · via Uses This
“For managing Kindle books I use Calibre, and the Send to Kindle browser plugin constantly.”
Jerry Belich Interview, Software/hardware engineer (Clockwork) · via Uses This
“Calibre for turning epubs and pdfs into mobi files.”
Joanne McNeil Interview, Writer, editor · via Uses This
“I use Calibre to manage my ebooks, and harbor an ambition to rewrite its web UI.”
Andy Hertzfeld Interview, Developer (Macintosh), software designer (Google+) · via Uses This

Also used by