What are some alternatives?
Readymag - Readymag is a comprehensive solution that allows you to design web publication, magazines, presentations, websites, and all the other publications.
PDFelement - All-in-one PDF editor
Zmags - Zmags provides solutions create and publish web experiences instantly.
Google Drive - Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.
SPIP - Système de Publication pour Internet
Pages - Pages for Mac is a word processor that offers tools needed to create documents.