Univer
Full-stack framework for spreadsheets, documents and slides
Founded
2023
Starting Price
Free
Category
Collaboration
Last updated March 5, 2026
About Univer
Univer is an open-source full-stack framework for creating and editing spreadsheets, documents, and slides on both web and server. Featuring a canvas rendering engine that handles millions of cells, real-time collaboration for up to 200 simultaneous editors, and a plugin architecture with 100+ built-in plugins, Univer provides an Excel-like experience in the browser. It's the actively maintained successor to Luckysheet.
Pros & Cons
Pros
- Powerful canvas rendering engine handles millions of cells
- 500+ spreadsheet formulas with server-side computation
- Real-time collaboration with 200 simultaneous editors
- Modular plugin architecture makes it highly extensible
- Open-source core under Apache-2.0 license
Cons
Key Features
500+ Spreadsheet Formulas
Comprehensive formula engine with web worker computation for performance
Real-Time Collaboration
Support for 200 simultaneous editors and 1,000 concurrent viewers
Canvas Rendering Engine
High-performance rendering that handles millions of cells smoothly
Plugin Architecture
100+ built-in plugins with extensible modular design
Server-Side Calculation
Process 2M+ formulas per sheet on the server
XLSX Import/Export
Full compatibility with Microsoft Excel file format
Conditional Formatting
18 types of conditional formatting for data visualization
Charts & Pivot Tables
20+ chart varieties and pivot table support for data analysis
Pricing
Community
Free
- Open source (Apache-2.0)
- Core spreadsheet features
- 500+ formulas
- Plugin architecture
- Self-hosted
Best For
Embedded Spreadsheets
Build spreadsheet functionality directly into your web application
Collaborative Data Editing
Enable teams to edit spreadsheets in real-time within internal tools
Server-Side Data Processing
Process large datasets with server-side formula computation
Document Management Systems
Create integrated document, spreadsheet, and presentation editing experiences
