If you're looking for another Builder.ai alternative, check out Bubble. It's a full-stack no-code app builder that lets you design, build, test and deploy production apps without writing a line of code. It comes with hundreds of pre-built templates, a drag-and-drop editor, AI-powered pages and scalable and secure hosting. With several pricing levels, including a free development version, Bubble is good for rapid development of serious apps.
Another good option is Glide, a no-code app builder that links to data in spreadsheets or databases and publishes apps on any device with fluid layouts. It includes data integration, advanced workflow creation and license consolidation, and lets people automate business processes and reduce software expenses. With more than 100,000 businesses using Glide, there's plenty of documentation and a good track record for rapid development of professional-looking apps.
If you're looking for a more mature platform, AppMaster is a no-code tool for building web and native mobile apps. It has a drag-and-drop interface, AI-generated code for every part of a project, and one-click publishing to AppMaster Cloud or other cloud services. AppMaster is geared for businesses building internal tools and customer-facing apps, and it comes with a free subscription and big savings on development costs.
Last, AppSheet is a no-code tool that lets you build and publish custom apps fast with no programming skills. It includes features like automated workflows, data capture through various forms and integration with Google Workspace and other apps. With several pricing levels and a free trial, AppSheet is good for business uses like project management and operations.