What is ToolJet?
ToolJet, founded in 2021 and headquartered in San Francisco, is an open-source, AGPL-3.0-licensed low-code platform for building internal applications. Its documentation describes connecting to databases and APIs, assembling UI from drag-and-drop widgets, and scripting logic in JavaScript. The project is free to self-host; ToolJet also sells hosted Starter and Pro cloud plans with discounts available for open-source projects.
Read the full overview
Sources checked 27 September 2026: official website, documentation, repository, pricing.
Key capabilities
- Data connections: databases, REST APIs and common SaaS tools.
- App builder: drag-and-drop widgets plus JavaScript for logic.
- Deployment: free self-hosted edition or hosted Starter/Pro cloud plans.
Internal application development and operational tooling are the core areas. Check AGPL-3.0 license implications for the intended use, and validate widget/data-source coverage with a real workflow before rollout.
Shortlist ToolJet when a team wants an open-source, self-hostable low-code builder for internal tools and is comfortable with AGPL-3.0 licensing terms. Compare its widget and data-source coverage against the specific systems already in use before committing.
A free, open-source license lowers the cost of trying ToolJet, but AGPL-3.0 carries obligations that differ from permissive licenses; legal and engineering should both review it before self-hosting a modified version commercially.
Technical details
- Access
- Self-hosted
- Source model
- Open source
- Founded
- 2021
- Headquarters
- San Francisco, USA
- Pricing model
- Open source
- API
- Available
- Website
- www.tooljet.com ↗
Official resources
What to verify for your environment
Start from the users, systems and operating responsibilities the tool needs to support.
- Confirm current features, licensing and support terms with the publisher.
- Validate deployment, data location, access control, backup and recovery requirements.
- Test integrations, export paths and a representative operational workflow before committing.
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