Appian

Appian is a strong match for the Retool concept. It explicitly positions itself as a low-code platform for process orchestration, automation, and intelligence, directly aligning with Retool's core value proposition. The website highlights features such as low-code design, API integration, process automation (including workflows), AI agents and generative AI, mobile app capabilities, and web portals, all of which correspond to the defined features. While direct mentions of specific database integrations or detailed code customization beyond 'low-code' are less explicit, the overall platform description strongly implies these capabilities for building complex internal tools.