If you're looking for a replacement for Adobe Developer App Builder, Mendix is a good alternative. Mendix is a low-code platform that lets you quickly create and deploy mobile and web apps, using AI to help you along the way. It's got a visual IDE, one-click cloud deployment, strong data management and third-party service integration, so it's a good option for enterprise developers.
Another good option is Adobe Commerce (Magento). Although it's a commerce platform, Adobe Commerce also has a rich set of API-first, headless developer tools for building custom apps and integrating with third-party services. That makes it a good option for those who want to focus on building scalable and personalized commerce experiences.
If you're looking for something more specialized, Payload is an open-source, headless Content Management System (CMS) and application framework. Built with TypeScript and React, it supports AI-generated content, visual editing and heavy customization, so it's good for collaborative projects that need flexibility and extensibility.
Last, MuleSoft is worth a look if your top priority is integration and automation. It lets developers and nontechnical people build efficient integrations with clicks, code or AI-prompted suggestions. The platform is good at connecting data, systems and AI models securely, and it can help you work a lot faster and speed up your digital transformation.