Who is ToolJet?
ToolJet is an open-source low-code platform (application development) for building internal business applications and workflows using a visual interface with configurable data integrations.
- Open-source low-code platform for internal tools and business applications
- Visual application builder with drag-and-drop UI components and layout tools
- Connectors and integrations to databases, APIs, and third-party enterprise systems (integration middleware)
- Deployment options including self-hosted and cloud-managed setups for enterprise use (platform engineering)
- Access control, workspace management, and collaboration features for teams and organizations
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More About ToolJet
ToolJet provides a low-code application development environment (application development) aimed at enterprises that need to create internal tools, dashboards, and workflow applications with less custom code. The platform centers on a browser-based visual builder where technical and semi-technical users compose user interfaces from a library of prebuilt components, bind these components to data sources, and define application logic using configuration panels and scripting where necessary.
The platform connects to a broad range of data sources and APIs (data integration), including relational databases, Representational State Transfer (REST) and GraphQL services, and common Software-as-a-Service (SaaS) systems, enabling enterprises to unify data from multiple operational systems into a single internal application. Configuration of queries, authentication parameters, and environment-specific settings is handled within the ToolJet workspace, enabling separation of development, staging, and production environments.
ToolJet supports deployment in different infrastructure models (cloud DevOps), including a cloud-hosted service and self-hosted deployments on customer-managed infrastructure. Self-hosting is typically done on Kubernetes or Virtual Machine (VM) environments using container images and orchestration scripts provided by the project, which allows organizations with strict compliance or data residency requirements to keep application runtimes and data within their own networks.
Role-Based Access Control (RBAC) and workspace management (identity and access management) are built into the platform so enterprises can govern which users can create, modify, or run applications. Teams can collaborate on app development within shared workspaces, with controls for promoting changes across environments and managing versioned configurations.
From an architectural perspective, ToolJet operates as a multi-tier web application, with a backend that handles data source connectivity, authentication, and server-side logic, and a frontend that renders the visual builder and end-user interfaces. It typically integrates into existing enterprise identity providers through Single Sign-On (SSO) protocols such as Security Assertion Markup Language (SAML) or OAuth-based methods when deployed in organizations that require centralized identity management.
In the broader low-code and internal tools category (application development), ToolJet is used as an alternative to custom front-end development for CRUD applications, admin panels, and operational dashboards. It is often positioned as a way to accelerate delivery of internal-facing apps that sit on top of existing databases and services, while still allowing engineers to inject custom code where needed through JavaScript or Application Programming Interface (API) configurations.
Within an enterprise technology directory, ToolJet fits primarily under low-code / no-code application platforms, with secondary categorization under data integration tools (for its connectors and query builders) and DevOps and platform engineering (for its deployment flexibility and self-hosting support).
Our description of ToolJet. Updated January 2026.
