Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.
XML Copy Editor - XML Copy Editor is a fast, free, validating XML editor.
SoftMaker Office - SoftMaker Office is one of the most powerful and reliable office suite that is fully compatible with the MS Office Suite.
Oxygen XML Editor - Oxygen XML Editor provides a comprehensive suite of XML authoring and development tools.
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
Liquid Studio - XML Tools Provider: XML Studio - Graphical XML Schema Editor.