Open source Office suites

Calligra Suite

Calligra Suite is a free, integrated work applications suite, build on top of KDE and Qt for using on Linux Desktop, Windows, Mac OS X and mobile phones. (GPL)

Linux - FreeBSD - Windows - MAC OS X

LibreOffice

LibreOffice is the free power-packed Open Source personal productivity suite for Windows, Mac OS X and Linux, that gives you six feature-rich applications for all your document production and data processing needs. (LGPL)

Linux - FreeBSD - Windows - MAC OS X

OnlyOffice

OnlyOffice is a multifunctional office suite that enables you to store and co-edit documents, manage projects, email correspondence and customer relations in one place. (AGPL)

Cross-platform

Open-Xchange

Open-Xchange is the information and knowledge headquarters of a company. Open-Xchange combines e-mail, appointment, contact and task management with intelligent document management. (GPL)

Cross-platform

4 applications