Osen is a premium admin template built with Bootstrap 5.3.7 and supports multiple frameworks, including React 19.x, Next.js 15.x, Angular 19.x, Laravel 12.x, ASP.NET Core 9.x, MVC5, Blazor, PHP 8.x, Django 5.x, Vue 3.x, Ruby on Rails, Spring Boot, Inertia.js with Vue or React (via Laravel), Flask, Symfony 7.x, CodeIgniter 4.x, CakePHP 5.x, and Node.js.

It features a fully responsive design, extensive customization options, and a rich collection of UI components. Osen delivers high performance and seamless adaptability across devices and browsers. It includes pre-built layouts, supports popular libraries and plugins, and offers ready-to-use applications such as Calendar, Chat, File Manager, Hospital Management, E-commerce Pages, Invoice Management, and Email.