Open Source Office 365 Alternatives

This project is a cloud-based office suite and self-hosted document server that enables the creation and editing of documents, spreadsheets, and presentations. It functions as a headless office application, utilizing a server-side processing engine to handle file rendering and formatting without requiring a local graphical user interface. The system operates as a real-time collaborative editor, employing operational transformation to allow multiple users to edit files simultaneously. It also serves as a web-based document processor capable of automating office tasks through macro execution an

CryptPad is a self-hosted, zero-knowledge office suite designed for real-time collaborative editing and content management. It provides a privacy-centric infrastructure where documents, files, and notes are encrypted in the browser before transmission, ensuring that the server administrator cannot access the underlying data. The platform implements zero-knowledge user authentication, utilizing cryptographic keys to verify identities so that plain text passwords are never stored on the server. To further isolate sensitive operations, the system employs a security architecture that separates th

Nextcloud is a self-hosted platform designed for private cloud storage, file synchronization, and collaborative team workspaces. It provides a comprehensive suite of tools for document editing, groupware services like calendars and contacts, and secure data management, all while ensuring users maintain full control over their infrastructure and data sovereignty. The platform distinguishes itself through a decentralized federated architecture that allows independent server instances to securely share data and collaborate across a network. It features a highly modular plugin ecosystem, enabling

AFFiNE is a collaborative knowledge base and productivity suite designed as a private-first, local-first platform. It provides an integrated workspace that combines structured documents with an infinite digital canvas, allowing users to organize complex information through a block-based model. By prioritizing local data persistence, the platform ensures immediate responsiveness and data sovereignty while maintaining a distributed state for real-time synchronization across multiple devices. The platform distinguishes itself through a canvas-integrated database engine that enables transitions b

ONLYOFFICE DocumentServer is a self-hosted online office suite that provides browser-based document, spreadsheet, and presentation editing with real-time collaborative capabilities. It natively supports Office Open XML formats (.docx, .xlsx, .pptx) and can be deployed on Linux servers, either through Docker containerization or direct installation. The server includes a cooperative editing engine that coordinates simultaneous changes across multiple users using operational transformation, with a WebSocket synchronization layer for instant state propagation. Security is handled through JWT auth

Luckysheet upgraded to Univer

This project is a React data table component integrated with shadcn/ui. It provides a set of tabular data grids that support sorting, filtering, and pagination. The implementation includes a virtualizing data grid and an infinite scroll table, which allow for the rendering of large datasets by loading records incrementally or displaying only the items visible in the viewport. It also functions as a real-time collaborative table, enabling multiple users to manage and edit shared datasets simultaneously. The component covers interactive data management and complex data visualization. This incl

DesktopEditors is an office suite application designed for creating and editing text documents, spreadsheets, and presentations across different operating systems. It serves as an OOXML compatible editor, ensuring that files are read and written according to Office Open XML standards for cross-platform document exchange. The suite functions as a collaborative document platform featuring real-time co-authoring, version tracking, and integrated communication tools. It also acts as an AI-powered document assistant and PDF editor, providing capabilities for content generation, automated spreadshe

Etherpad-lite is a web-based platform designed for real-time collaborative text editing. It enables multiple users to view and modify the same document simultaneously, utilizing an operational transformation engine to synchronize content across all connected client sessions. The platform distinguishes itself through a modular, plugin-based architecture that allows for the integration of third-party extensions to introduce custom functionality. It provides a comprehensive programmatic interface for document management, allowing users to automate the creation, update, and retrieval of text docu

Illa-builder is a low-code internal tool builder and API integration platform used to create business applications and admin panels. It functions as a database GUI dashboard and visual workflow automator, allowing users to connect to databases and external APIs to manage data and automate business processes. The platform provides a self-hosted app framework that can be deployed on private infrastructure via Docker. It enables the creation of custom dashboards and CRMs while maintaining full control over data and hosting. The system includes a visual drag-and-drop canvas for designing user in

Univer is a modular, web-based framework for embedding high-performance office editing suites, including spreadsheets, documents, and presentations, directly into web applications. It utilizes a canvas-based rendering engine to manage complex layouts and large datasets, ensuring consistent performance during user interaction. The system is built on an isomorphic data model that allows the same document logic to function in both browser-based interfaces and headless server-side environments. The platform distinguishes itself through a command-based state mutation system and a dependency-graph

Xray is a collaborative text editor and distributed workspace manager that utilizes conflict-free replicated data types to synchronize real-time edits and directory structures across peers. It functions as both an Electron-based desktop application and a headless editor server that manages workspaces and file systems remotely for connected clients. The project distinguishes itself by integrating fine-grained version control tracking, recording keystroke-level changes and uncommitted edits between Git commits. It employs a decentralized synchronization model for working copies and uses operati