LibreOffice

LibreOffice is a Free & Open Source suite of office applications
available for GNU/Linux, Mac OS X, Microsoft Windows, Android, and the
Cloud.

LibreOffice is developed and supported by The Document Foundation, an
independent self-governing meritocracy focused on delivering the best
possible document production software to a broad range of users.

Created by leading members of the OpenOffice.org community, and
building on years of dedicated work within that project, founders of
the Document Foundation believe that the culture of an independent
community brings out the best from all contributors.