Univer
Embeddable office SDK for spreadsheets, documents and slides
What it is
Univer is a TypeScript SDK for building spreadsheet, document and presentation editing into your own web product. It uses canvas rendering, a formula engine and a plugin architecture, and the same Facade API runs in the browser or headless on Node.js for server-side processing. Developers building SaaS products, internal tools or AI agent workflows use it to add Excel-like and Word-like editing without depending on a hosted office suite.