Univer
Full-stack framework for spreadsheets, documents and slides
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
- Pro features require paid license for enterprise use
- Steeper learning curve compared to simpler spreadsheet tools
- Relatively new project compared to established alternatives
- Documentation partially in Chinese
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
Documents & Presentations
Built-in document editor with 14 text styles and presentation builder with 20 slide layouts
Pricing
- Open source (Apache-2.0)
- Core spreadsheet features
- 500+ formulas
- Plugin architecture
- Self-hosted
- Everything in Community
- Real-time collaboration
- Server-side calculation
- Enterprise support
- 30-day free trial
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
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