After the Deadline is a free service that lets you create better content and you spend less time in editing your work like your blog posts and other content you create on Internet. You can use it in your WordPress site, bbPress, BuddyPress, Google Chrome, Firefox and various other frameworks.
LibreOffice is GPL-licensed free and open source office suite , with Writer, Impress, Calc spreadsheet, Base relational database frontend
Install using sudo apt-get install libreoffice-kde
KOffice suite is part of the KDE project and provides capabilities of OpenOffice suite without the licensing restrictions of OpenOffice. It can be used in any version of (K)Ubuntu. Install using: sudo apt-get install koffice
Xournal is a free (GPL-licensed) GTK/Gnome-based application for notetaking, sketching, or keeping a journal using a stylus. Install using( Remember: universe repositories must be enabled): sudo apt-get install xournal