Build customs tools without coding knowledge, by dragging and dropping building blocks
Retool allows you to : 1. Connect your data sources, like [PostgreSQL](https://docs.retool.com/docs/postgresql-integration), [Salesforce](https://docs.retool.com/docs/salesforce-integration), [Firebase](https://docs.retool.com/docs/firebase-integration), and 20+ more 2. Build your queries and logic in [SQL](https://docs.retool.com/docs/sql-in-retool) or [JavaScript](https://docs.retool.com/docs/javascript-in-retool) 3. Connect your queries and logic to prebuilt components like tables, text inputs, and buttons 4. Organize and connect your components into an app External APIs include Stripe, Firebase, Github, Twilio, Google Sheets, etc. It also connects with object storage such as Amazon S3 and Google Cloud Storage. You can also build internal tools on top of Lambda functions (see [here](https://retool.com/integrations/aws-lambda)) (From Retool documentation).
