If you want to create a fully-managed and highly scalable backend use Back4App. The Backend-as-as-Service feature allows you to customize backends without needing maintenance.
2. Appian
Appian is the top low code app builder that automates several aspects of your workflow to enhance your business outcomes. App developers use this platform to ensure unified data that allows them to build, test and deploy apps from a single place.
3. Zoho Creator
This platform allows app users to develop custom applications using minimal to no coding knowledge
It is a platform that offers developers to create progressive web apps & mobile apps for mobile devices across platforms instantly. You can also deploy reactive web apps with this tool
5. GeneXus
A smart low code platform that allows quick software application development by automatically generating the development and deployment environment
BuildFire helps create high-performing and reliable iOS and Android apps for your business. The developer SDK offers in-built functionality that provides app creation with custom functionality.