GMX Online Office Alternatives

GMX Online Office is described as 'Web application to open and edit documents, spreadsheets, and presentations. Integrated with GMX File Storage cloud storage' and is a Office Suite in the office & productivity category. There are more than 10 alternatives to GMX Online Office, not only websites but also apps for a variety of platforms, including Android, iPhone, Mac and Windows apps. The best GMX Online Office alternative is ONLYOFFICE, which is both free and Open Source. Other great sites and apps similar to GMX Online Office are Google Docs, Google Workspace, Nextcloud Hub and Infomaniak kSuite.