NocoDB
Open-source Airtable alternative — any database becomes a spreadsheet.
AGPL-3.0 platform with Grid, Kanban, Gallery, Form, and Calendar views. Connects to MySQL, Postgres, SQLite with auto-generated REST/GraphQL APIs.
Baserow
No-code database and app builder — open-core Airtable alternative.
MIT open-core platform for relational databases, automations, dashboards, and AI-assisted workflows. API-first Django/Nuxt stack with Docker self-hosting.
Compare Smartsheet alternatives
Smartsheet is a SaaS work management platform that layers Gantt charts, Kanban boards, dashboards, and automation on top of a spreadsheet-like grid. It's closed source and priced per user, with advanced automation and reporting features gated behind higher tiers.
Baserow and NocoDB take a database-first approach instead — closer to Airtable than to project-management software — so they fit best if what you actually need is a flexible, structured data store with a spreadsheet UI rather than Smartsheet's Gantt/PM-specific views. NocoDB is the stronger choice if you're layering this on top of a database you already run.
FAQ
Is there a free, open-source alternative to Smartsheet?
Yes. Baserow and NocoDB are both open source and free to self-host.
What's the best open-source alternative to Smartsheet?
Neither is a direct feature-for-feature clone of Smartsheet's Gantt/PM tooling, but NocoDB is the better pick if you want to expose an existing database as a spreadsheet, while Baserow is better for building new structured-data apps.
What are the top open-source alternatives to Smartsheet?
Browse all open-source alternatives to Smartsheet above, or explore the full Automation & Low-Code category for more options.