Oqtane is an open-source project that aims to provide a modular and extensible platform for building web applications using the Blazor framework. Blazor is a framework for building web applications using C# and the .NET runtime, rather than JavaScript, which allows for the possibility of sharing code across the server and client side of an application.

Oqtane uses Blazor's WebAssembly capabilities to allow for modular development of the front-end and the back-end, with the back-end being built using the ASP.NET Core framework. The project also provides a set of modules and tools to help developers quickly create and deploy web applications. These modules and tools include an extensive set of pre-built UI controls, an administration console, and support for internationalization, among other things.

One of the key features of Oqtane is its modular architecture, which allows developers to create independent, self-contained components that can be easily plugged into the platform. These components can include everything from UI controls and forms to entire pages and workflows. This modular approach promotes code reuse, which makes it easier to create and maintain large-scale web applications.

Another important feature of Oqtane is its built-in support for internationalization and localization, which allows developers to create web applications that can be easily localized for different languages and cultures.

In short, Oqtane is an open-source project that aims to provide a modular and extensible platform for building web applications using the Blazor framework and .NET core, with easy to use built in features and support for internationalization, making it easy for developers to create and maintain large-scale web applications.