LocalDB is a lightweight version of the SQL Server Express Database Engine that is targeted for program development. LocalDB starts on demand and runs in user mode, so there is no complex configuration.
Zengine is a cloud-based platform that empowers a non-technical person to quickly build custom business applications, while also allowing developers to extend the application by adding integrations and complex functionality. Zengine can be used to track customers, job candidates, projects or more and replaces paper processes, outgrown spreadsheets, or generic software products.