Because Lino applications are Django projects, the following features (copied from the Django website) also apply to Lino:
Object-relational mapper : Define your data models entirely in Python. You get a rich, dynamic database-access API for free -- but you can still write SQL if needed.
Internationalization : Django has full support for multi-language applications, letting you specify translation strings and providing hooks for language-specific functionality.
Cache system : Hook into memcached or other cache frameworks for super performance -- caching is as granular as you need.
Lino then adds its own features to the above:
An out-of-the-box front end. We believe that application developers should develop applications, not waste their time writing html templates or css. It is one of Lino's design goals to separate business logic and front end.
Layouts: Lino applications use the Python language not only for designing your models but also your forms.
Lino applications have a good support for managing multilingual database content.
Lino provides tools for generating Multilingual end-user documentation.
Lino comes with a nice way for handling Polymorphism.
Lino includes Lino Extensions Library, a collection of reusable plugins for all kinds of Lino applications.