Bubble AI

Bubble is a strong match for the Retool concept. It is a full-stack no-code app builder that allows users to create web and native mobile applications without writing code. It explicitly mentions drag-and-drop visual development, connections to various services and databases via API, and the ability to build custom logic and workflows. The platform also highlights enterprise-grade security, flexible deployment options (cloud and on-premises), version control, and AI-powered features for app generation and integration. While it emphasizes 'no-code', it also offers extensibility through plugins and API connections, which can involve custom code for advanced integrations.