Kobo Converter is tools to convert Kobo Desktop ebook file to PDF, Kindle, Word, Text and Html format file, user download ebook in Kobo Desktop App, convert DRM kepub file to other format with 1 - Click. (ebook-converter.com)
Kobo made headlines this week when they nixed their own proprietary KePub format from also being downloaded to a users PC. (goodereader.com)
In the meantime, there's a link in the ETA part of the above post which goes to The Digital Reader where you can find a link to Calibre plugin which works with the Kobo Desktop app to convert kepub books into epub. (dearauthor.com)