Build complicated frontends without any experience in React, CSS, or even HTML. Drag and drop 35+ in-built UI components to build even complicated frontends. Adding new components, resizing them, adjusting position, changing colors, etc can be done using the visual app editor. Customize the component with in-built properties and styles without using a single line of code. Viewer for verifying current properties of components, queries, and global states of applications. ToolJet ships with its built-in database called ToolJet DB (built on top of PostgreSQL). You can also connect to external data sources such as databases ( PostgreSQL, MongoDB, MS SQL Server, Snowflake, BigQuery, etc ), API/GraphQL endpoints, SaaS tools ( Airtable, Stripe, Google Sheets, etc ), and cloud object storage services ( AWS S3, Google Cloud Storage and Minio ).