Writer2ePub (W2E) is an extension for OpenOffice.org or LibreOffice which allows you to create an ePub file from any file format that Writer can read.

Writer2ePub (W2E) is an extension for OpenOffice.org or LibreOffice which allows you to create an ePub file from any file format that Writer can read.

You can easily generate an ePub of professional quality that you can edit with the appropriate ePub-authoring tools later. Moreover, W2E fixes several formatting errors and generates by default a logical layout, in line with the traditional editorial standards.
What Writer2ePub Is Not

W2E is not a format converter. If you are looking for a program to convert one or more files with arbitrary format to ePub format, keeping the original formatting rules and layout, then you should give a try to Calibre

W2E is not an ePub editor: in this case, you should resort to the excellent Sigil
What Writer2ePub Is

W2E is an ePub file creator. It allows you to easily create an ePub file of high quality, at code-level and as typographic result. You do not need to worry about editing and typesetting anymore!

W2E main features include:

generated code (XHTML, CSS and XML) is extremely clean and simple
the final ePub is very easy to edit with ePub editors like Sigil
high compatible with the most common eReader programs/platforms: iPad, Adobe Digital Editions
automatic correction of wrong formatting
metadata can be managed with simplicity and flexibility

The beginner might want to use W2E as a simple file converter. To obtain a good ePub file, you just need to open any file that can be read by Writer (OO or LibO) and click a button!

Also advanced users can profit from W2E. In fact, they will get a validated ePub, ready to enter further processing stages, being sure that it will be compatible with nearly all the devices on the market.