# OnlyOffice

OnlyOffice (formerly TeamLab), stylized as ONLYOFFICE, is a free software office suite and ecosystem of collaborative applications. It consists of online editors for text documents, spreadsheets, presentations, forms and PDFs, and the room-based collaborative platform.
OnlyOffice is delivered either as SaaS or as an installation for deployment on a private network. Its cloud solutions cater to businesses, educational institutions, and government agencies, offering advanced collaboration features. Created for online document collaboration, OnlyOffice also offers desktop editors for offline work.

## OnlyOffice Docs

OnlyOffice includes an online editing suite called OnlyOffice Docs which comprises:
* Document editor (styling and formatting tools, objects, table of contents, bookmarks, document comparison, mail merge, version history, layout customization etc).
* Spreadsheet editor (functions and formulas, table templates, named ranges, charts, equations, pivot tables, conditional formatting, macros, etc).
* Presentation editor (formatting tools, objects, style options, transitions, animations, Presenter mode, Slide Master).
* PDF editor (text co-editing, adding/deleting/rotating pages, adding signatures, inserting objects, text annotations, including highlight, underline, cross out; comments, freehand drawings).
* PDF form creator & filler (PDF forms, multiple fillable fields, extended field properties).
The suite supports collaborative editing with real-time co-authoring. Communication tools include commenting, chatting, Zoom, Jitsi, and Rainbow plugins for audio and video calls. The editors also provide revision history and change-tracking features.
The beta version of OnlyOffice Docs predecessor, Teamlab Document Editor, was introduced at CeBIT 2012 in Hannover. The product was built using Canvas, a part of HTML5 that allows dynamic, scriptable rendering of 2D shapes and bitmap images.
The basic formats used by OnlyOffice Docs are OOXML (DOCX, XLSX, PPTX) and PDF. 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.
The suite's functionality can be extended using plugins (side applications). Users can choose from the internal marketplace of plugins or create their own applications using the provided API.
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.
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.

## OnlyOffice DocSpace

OnlyOffice DocSpace is a cloud collaboration platform by OnlyOffice that combines online editors and a sharing environment based on rooms.
Rooms of different types can be created:
* In Collaboration rooms, users have access to all editing tools in the editors and can freely access any content.
* In Public rooms, it is possible to invite users via external links to allow them to view files without registration, as well as embed the room contents into web interfaces.
* In Custom rooms, following roles can be granted: room manager, power user, viewer, editor, commenter, reviewer, and form filler, with corresponding level of access to the files in the room.
* In Form-filling rooms, designed for collecting and managing form responses, users can share ready-to-use forms for surveys, applications, or contracts, collecting responses, tracking filled forms and analyze aggregated data.
* In Virtual Data Rooms (VDRs), secure spaces designed for handling sensitive documents equipped with features like watermarks, expiration settings, activity tracking, and audit logs, ensuring strict confidentiality and compliance for industries requiring robust document security.
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.

## OnlyOffice DocSpace integrations

For developers and integrators, OnlyOffice provides open API which allows integrating DocSpace into own web applications – both separate rooms or the whole space.
| Integration | Developers | Languages | License | Current version | Features |
| Zoom | Ascensio System SIA | C#, HTML, CSS | GNU AGPL v3.0 | 2.2.1 | Collaborating on office documents during Zoom Meetings Managing files between meetings via the DocSpace account |
| WordPress | Ascensio System SIA | PHP, JavaScript, CSS | GPL-2.0 | 2.1.0 | Adding DocSpace rooms or files to the WordPress pages Storing, editing, collaborating on documents without leaving the WordPress interface |
| Drupal | Ascensio System SIA | PHP, JavaScript, CSS, Twig | GPL-2.0 | 1.1.0 | Embedding office documents into a Drupal website Managing documents from the Drupal account |
| Zapier | Ascensio System SIA | JavaScript | Apache-2.0 | 1.0.1 | Automating workflow using zaps for DocSpace and various apps like Asana, Slack, HubSpot, Discord, Linear, etc. |
| Pipedrive | Ascensio System SIA | JavaScript | | 1.0.0 | Working with office files related to your Pipedrive Deals |

## Implemented AI technologies

In February 2023, OnlyOffice released the first version of the ChatGPT plugin with a basic set of features, such as text generation based on a user’s prompt, question answering, translation, text summarization and conversation-style communication.
In January 2024, version 1.1.4 of the plugin was released which provided new tools for document editing and access to GPT-4.
Another AI helper integrated in OnlyOffice is the ZhiPu Copilot plugin which supports Chinese language and uses the local knowledge base.
The December 2024 release introduces fully customizable AI functionality, allowing users to connect any AI assistant, including local models, and tailor them for needed tasks. The pre-installed AI models are OpenAI; Together AI; Mistral; GPT4All (for desktop only).

## International editions

International editions of OnlyOffice in various countries include:
* CloudStor Online collaborative documents by AARNet, Australia's national research and education network, was based on the OnlyOffice office suite. CloudStor was decommissioned by AARNet in December 2023.
* In Czechia, OnlyOffice is marketed as a part of the IceWarp solution, a Czech alternative to M365 or GSuite.
* The integration between the OnlyOffice suite and Jalios JPlatform (France) enables users to author and co-author text documents, spreadsheets and presentations online from their Jalios platform.
* OnlyOffice is used in ByCS (BayernCloud Schule), the platform for digital support in everyday school life launched in Bavaria, Germany.
* Teppi Technology, a Japanese developer of file sharing and search systems, integrated OnlyOffice in the enterprise search engine called FileBlog.
* OnlyOffice document, spreadsheet and presentation editors are marketed as R7-Office in Russia.
* Infomaniak (Switzerland) integrated OnlyOffice into the kDrive suite under their brand to provide users with the ability to edit office documents.
* PDFFiller (USA) which offers native OnlyOffice Documents PDF Editor.

## Technology

OnlyOffice Docs (Document Server) maintains text document, spreadsheet, presentation, PDF, and form editors, and is technologically based on HTML5 Canvas, JavaScript SDK, and Node.js for server-side scripting.
OnlyOffice DocSpace is based on the .NET Core and the latest version of .NET for the server side, and React for the client side. Other technological components for the back-end include С#, MySQL, Kafka, ElasticSearch; for the front-end — ES6, CSS/SASS, Mobx, Styled-Components, i18next, Webpack 4/5.
OnlyOffice Workspace comprises Document Server, Community Server, and Mail Server. The Community Server is written in ASP.NET for Windows and in Mono for Linux and distributions. The Mail Server is based on the iRedMail package which consists of Postfix, Dovecot, SpamAssassin, ClamAV, OpenDKIM, and Fail2ban.

## Desktop and mobile apps

OnlyOffice Desktop is an offline version of OnlyOffice editing suite. The desktop application supports collaborative editing features when connected to the portal, Nextcloud, ownCloud, kDrive, Seafile, or Liferay. It is offered free of charge for both personal and commercial usage.
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. Besides platform-specific versions there is also a portable option. OnlyOffice Desktop Editors are available for installation as Flatpak, snap and AppImage packages on Linux.
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. In 2020, the developers announced Private Rooms based on AES-256 algorithm and RSA asymmetric encryption.
OnlyOffice Desktop Editor is available by default in the following operating systems:
| Name | Availability |
| Br OS | Pre-installed |
| Cutefish OS | Available in official store |
| Deepin | Available in official store |
| Escuelas Linux | Pre-installed |
| Linkat | Pre-installed |
| Linspire | Pre-installed |
| Linux Mint | Available in official store |
| Wubuntu | Pre-installed |
| Manjaro | Available in Pamac |
| risiOS | Pre-installed |
| SparkyLinux | Pre-installed |
| Ubuntu | Available in official store |
| Zorin OS | Available in official store |
| Mauna Linux | Available in official store |
| Kylin OS | Available in official store |
| Guará Linux | Available in official store |
| Regata OS | Available in official store |

## History

* In 2009, a group of software developers from Ascensio System SIA (Latvian-based) and New Communication Technologies (Russian-based) launched a project called TeamLab, a platform for internal team collaboration.
* In March 2012, TeamLab introduced the first HTML5-based online document editors at CeBIT.
* In July 2014, TeamLab Office was officially rebranded to OnlyOffice and the source code of the product was published on SourceForge and GitHub on terms of AGPL-3.0.
* In March 2016, the developers released a desktop application – OnlyOffice Desktop Editors, which is positioned as an open-source alternative to Microsoft Office.
* In February 2017, the first integration app for ownCloud/Nextcloud was launched.
* In January 2022, the project introduced OnlyOffice Forms.
* Following the Russian invasion of Ukraine in 2022, some customers moved away from OnlyOffice citing sanctions or ethical reasons.
* In May 2022, a new office branch was opened in Tashkent, Uzbekistan as a development hub.
* In April 2023, OnlyOffice released new solution – OnlyOffice DocSpace.
* In August 2023, OnlyOffice opened a holding company in Singapore and incorporated all the existing branches (those in Latvia, USA, UK, Armenia, Uzbekistan, Serbia) under the one brand. Ascensio System SIA was to become 100% owned by the British-based Ascensio System Ltd, which in its turn was to become 100% owned by OnlyOffice Capital Group Pte. Ltd. The beneficiaries of OnlyOffice Capital Group Pte. Ltd. are listed in the registry of Singapore companies by ACRA.
* In October 2023, OnlyOffice released the native PDF editor.
* In February 2024, OnlyOffice introduced RTL support.
* In June 2024, OnlyOffice released the full-featured PDF editor.
* In August 2024, OnlyOffice registered an official department in Shanghai, China.
* In November 2024, OnlyOffice launches Virtual Data Rooms for advanced file security and transparency with automated indexing and content tracking.