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ONLYOFFICE Desktop Editors is a free and open-source office suite for working with documents, spreadsheets, presentations, forms, and PDF files. ONLYOFFICE Desktop Editors has maximum compatibility with MS Office documents and supports all popular file formats including DOCX, ODT, XLSX, ODS, CSV, PPTX, ODP, PDF, etc. Create, view, and edit files of any size and complexity. Use professional editing and formatting features, add and edit complex objects like autoshapes, SmartArt, charts, tables, equations and more. Perform calculations in spreadsheets with over 450 formulas, use Sheet Views, apply conditional formatting, add and edit pivot tables. Build stunning presentations with schemes, animations, transitions, slide design layouts and guides, present in presenter mode. Edit PDFs: highlight, underline and cross out text, leave comments and freehand drawings. Work with forms: create model documents with fillable fields and share them for filling, export to editable PDF and DOCX. Browse library of ready templates. Make the most of your editing with the collection of third-party plugins. Generate and analyze texts with AI helper, insert YouTube videos, automatically translate any word or sentence, highlight code, convert text to markdown, host audio and video meetings with Zoom, Jitsi and Rainbow, create bibliographies. Take care of document security: Encrypt your documents with different access rights, protect them with passwords, add digital signatures and watermarks. View PDF, DjVu, and XPS files comfortably in the document viewer. Convert PDF files to editable DOCX format. Connect ONLYOFFICE Desktop Editors to the cloud platform of your choice: ONLYOFFICE Workspace, ONLYOFFICE DocSpace, Nextcloud, ownCloud, Moodle, or others to collaborate on documents with your team. Co-edit in real-time or in paragraph-locking mode, add comments and mentions, use Track Changes and review files, browse version history, communicate via online chat, and more.