Reduce PDF Size - Reduce PDF Size a free PDF document compression app.
Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.
Zamzar - Free conversion online of many type of documents (images, text, video, audio...
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
PDF-XChange Editor - The smallest, fastest, most feature-rich PDF editor/viewer available
SoftMaker Office - SoftMaker Office is one of the most powerful and reliable office suite that is fully compatible with the MS Office Suite.