Other types of supported formats (ODT, DOC, RTF, EPUB, MHT, HTML, HTM, ODS, XLS, CSV, ODP, PPT, DOTX, XLTX, POTX, OTT, OTS, OTP, XML, XPS, DjVu and PDF-A) are processed with inner conversion to DOCX, XLSX or PPTX if editing is possible.

[5] OnlyOffice Docs provides cross-platform compatibility, offering Integration with Nextcloud, ownCloud, SharePoint, Moodle, and other platforms via ready-to-use connectors or API and WOPI.

[6] Among data security features, OnlyOffice offers end-to-end encryption, compliance with GDPR, JWT protection, access control, deployment options for private cloud environments, and others.

[7] Rooms of different types can be created: Along with various access levels, DocSpace admins can adjust the security settings to control the login procedure and prevent data leaks, including such options as 2FA and Single Sign-On, trusted mail domains and session lifetime, IP restriction, etc.

[25] The desktop application supports collaborative editing features when connected to the portal,[26] Nextcloud, ownCloud,[27] kDrive,[28] Seafile,[29] or Liferay.

The desktop editors are cross-platform available for Windows XP or later (x86 and x64), Debian, Ubuntu and RPM-based Linux distributions, macOS 10.10 and newer, including computers built on Apple Silicon.

In early 2019, OnlyOffice announced the launch of a developer preview of end-to-end encryption of documents (files themselves, online editing and collaboration) that involves blockchain technology and is included in the functionality of the desktop suite.