Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.
Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.
LibreOffice - Free office suite, open source, and compatible with .doc, .docx, .xls, .xlsx, .ppt, .pptx files. Updated regularly – download for free. Originally based on OpenOffice.org.
Joomag - Joomag is the all-in-one digital publishing platform empowering businesses large and small to create, distribute, track, and monetize their interactive content.
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
uberflip - Organize and Centralize ALL of your Content in minutes